{
    "count": 40,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 4084,
            "url": "https://svs.gsfc.nasa.gov/4084/",
            "result_type": "Visualization",
            "release_date": "2013-06-21T01:00:00-04:00",
            "title": "Supermoon 2013",
            "description": "On June 23, 2013, the Moon will be full at the same time that it is closest to Earth for the year. This coincidence is sometimes called a supermoon.The Moon's orbit is slightly elliptical and therefore a little off-center relative to the Earth. Each month, the Moon passes through points in its orbit called perigee and apogee, the closest and farthest points from the Earth for that month. Some perigees are a little closer than others. The closest perigee for 2013 occurs on June 23 at around 11:18 Universal Time, when the Moon will be 356,991 kilometers (221,824 miles) away. As it happens, this is only a few minutes before the time of peak full Moon at 11:32 UT, when the Moon's ecliptic longitude differs from the Sun's by exactly 180 degrees.How often does this happen? The period between perigees, called the anomalistic month, is 27.55 days. The time between full Moons, called the synodic month, is 29.53 days. These two periods sync up every 413 days, or 1.13 years. 15 anomalistic months are about as long as 14 synodic months. So that's how often the pattern repeats.The animation begins in May, showing that perigee and full Moon miss each other by about a day. It then shows apogee on June 9, when the Moon is almost 32 Earth diameters away. It ends on June 23, the day of the supermoon, when the distance to the Moon is 28 Earth diameters. The Moon graphic in the upper left shows the change in the Moon's apparent size as it moves closer and farther in its orbit. (The relative sizes of the Earth and Moon in the main orbit graphic are exaggerated by a factor of 15 to make them more easily visible.)By another coincidence, the supermoon occurs just two days after the northern summer solstice, when the Sun reaches its highest point in the northern hemisphere sky. The second animation shows the relationship between the Sun and the Earth at both the summer and winter solstice. || ",
            "hits": 220
        },
        {
            "id": 4067,
            "url": "https://svs.gsfc.nasa.gov/4067/",
            "result_type": "Visualization",
            "release_date": "2013-06-05T11:00:00-04:00",
            "title": "Moon Phase and Libration, 2013 South Up",
            "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0002.jpg (730x730) [94.7 KB] || comp.0001.tif (1920x1080) [2.3 MB] || ",
            "hits": 291
        },
        {
            "id": 4043,
            "url": "https://svs.gsfc.nasa.gov/4043/",
            "result_type": "Visualization",
            "release_date": "2013-03-06T11:00:00-05:00",
            "title": "LRO Peers into Permanent Shadows",
            "description": "The Moon's permanently shadowed regions, or PSRs, are places on the Moon that haven't seen the Sun in millions, or even billions, of years. The Earth's tilted axis allows sunlight to fall everywhere on its surface, even at the poles, for at least part of the year. But the Moon's tilt relative to the Sun is only 1.6°, not enough to get sunlight into some deep craters near the lunar north and south poles. PSRs are therefore some of the coldest, darkest places in the solar system.Because of that, PSRs are expected to be excellent traps for volatiles, chemicals that would normally vaporize and escape into space, and this includes water. Lunar Reconnaissance Orbiter (LRO) includes several instruments designed to peer into the PSR darkness and measure temperature, reflectivity, and neutron absorption, all of which are clues to what chemicals might be hiding there. This animation shows where the PSRs are and in what ways LRO can see inside them. || ",
            "hits": 393
        },
        {
            "id": 4000,
            "url": "https://svs.gsfc.nasa.gov/4000/",
            "result_type": "Visualization",
            "release_date": "2012-11-20T12:00:00-05:00",
            "title": "Moon Phase and Libration, 2013",
            "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0002.jpg (730x730) [94.6 KB] || comp.0001.tif (1920x1080) [2.3 MB] || ",
            "hits": 418
        },
        {
            "id": 3959,
            "url": "https://svs.gsfc.nasa.gov/3959/",
            "result_type": "Visualization",
            "release_date": "2012-09-27T00:00:00-04:00",
            "title": "RXTE Views X-ray Pulsar Occulted by the Moon",
            "description": "On Oct. 13, 2010, NASA's Rossi X-ray Timing Explorer (RXTE), a satellite in low-Earth orbit, observed a bursting X-ray pulsar as it was eclipsed by the Moon. This provided scientists with an unusual opportunity to calculate the precise position of the pulsar by timing its disappearance and reappearance at the edge of the Moon's disk.The story began a few days earlier, on Oct. 10, when the European Space Agency's INTEGRAL satellite detected a transient X-ray source in the direction of Terzan 5, a globular star cluster about 25,000 light-years away toward the constellation Sagittarius. This was the start of an extradordinary series of outbursts that ended Nov. 19. The object, dubbed IGR J17480-2446, is classed as a low-mass X-ray binary system, where a neutron star orbits a star much like the Sun and draws a stream of matter from it. As only the second bright X-ray source to be found in Terzan 5, scientists shortened the name of the system to T5X2. As shown in this animation, ingress (the moment when the pulsar disappeared) occurred on the Moon's eastern limb just above the equator. Egress, 8 minutes 32 seconds later, was near the south pole on the western limb. The timing of ingress and egress depended delicately on the shape of the terrain. In other words, it mattered whether the pulsar passed behind a mountain or a valley. So the calculation relied on the detailed topography measured by both JAXA's Kaguya and NASA's Lunar Reconnaissance Orbiter.The animation faithfully reproduces the angle of the Sun, the position of RXTE, the position and orientation of the Moon as seen from the satellite, the Moon's topography, and the starry background. RXTE's position was derived from the Goddard Flight Dynamics Facility ephemeris for day 6129 of the satellite's orbit, while the Sun and Moon positions came from JPL's DE421 solar system ephemeris. All of the positions and the viewing direction were transformed into Moon body-fixed coordinates, so that in the animation software, the Moon remained stationary at the origin, while the camera moved and pointed appropriately. The Moon, the stars, the pulsar, and the clock were all rendered separately and layered together. || ",
            "hits": 463
        },
        {
            "id": 3936,
            "url": "https://svs.gsfc.nasa.gov/3936/",
            "result_type": "Visualization",
            "release_date": "2012-04-19T00:00:00-04:00",
            "title": "Earthrise",
            "description": "The famous color photograph known as Earthrise, as well as a black-and-white image taken a minute earlier, document the moment when Earth was seen for the first time by human eyes from behind the Moon. They were taken on December 24, 1968 by the crew of Apollo 8, the first humans to leave low Earth orbit.The sight of a small, intensely blue Earth rising above the barren, gray horizon of the Moon was one of the few things that NASA and the crew of Apollo 8 had not thoroughly planned and rehearsed beforehand. As historian Robert Poole noted, this lack of preparation meant that the sight of Earth came with the force of a revelation, not just for the astronauts but for everyone on the ground. We came all this way to explore the Moon, Apollo 8 astronaut Bill Anders said, and the most important thing is that we discovered the Earth.Using the latest elevation data from Lunar Reconnaissance Orbiter, this visualization attempts to recreate what the astronauts saw. The virtual camera of the rendering software is put in the position of the Apollo 8 spacecraft at the time of the photographs, as the spacecraft emerged from its fourth pass behind the Moon. It shows a two-minute interval centered on 16:39:06 UT (10:39 a.m. Houston time) on December 24, 1968. This is around the time of AOS (acquisition of signal), the moment when radio contact is re-established after being lost on the far side of the Moon.The position and motion of the spacecraft are based on a state vector, a set of (x, y, z) position and (vx, vy, vz) velocity values, published in NASA's Apollo 8 Mission Report about a year after the flight. The animator translated these values, given in Moon-centered inertial coordinates for Besselian year 1969.0, into a modern coordinate system, then calculated an orbit. The spacecraft was 110 km (68 miles, 60 nautical miles) above the surface of the Moon at 11.2°S 113.8°E when the Earthrise photograph was taken. || ",
            "hits": 397
        },
        {
            "id": 3917,
            "url": "https://svs.gsfc.nasa.gov/3917/",
            "result_type": "Visualization",
            "release_date": "2012-03-15T00:00:00-04:00",
            "title": "Hyperwall: Three Moon Sites",
            "description": "Using elevation data returned by Lunar Reconnaissance Orbiter (LRO), these hyperwall-resolution animations visit three prominent features on the Moon's near side. || ",
            "hits": 221
        },
        {
            "id": 3909,
            "url": "https://svs.gsfc.nasa.gov/3909/",
            "result_type": "Visualization",
            "release_date": "2012-03-14T11:00:00-04:00",
            "title": "Tour of the Moon: Additional Footage",
            "description": "This is additional footage produced for the narrated version of Tour of the Moon. It supplements the visualizations in entry 3874. || ",
            "hits": 89
        },
        {
            "id": 3894,
            "url": "https://svs.gsfc.nasa.gov/3894/",
            "result_type": "Visualization",
            "release_date": "2012-01-01T00:00:00-05:00",
            "title": "Moon Phase and Libration, 2012",
            "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [67.4 KB] || moon.0001.tif (1920x1080) [1.1 MB] || ",
            "hits": 555
        },
        {
            "id": 3874,
            "url": "https://svs.gsfc.nasa.gov/3874/",
            "result_type": "Visualization",
            "release_date": "2011-10-27T06:00:00-04:00",
            "title": "Tour of the Moon",
            "description": "Using elevation and image data returned by Lunar Reconnaissance Orbiter (LRO), this animation takes the viewer on a virtual tour of the Moon. The tour visits a number of interesting sites chosen to illustrate a wide variety of lunar terrain features. Some are on the near side and are familiar to both professional and amateur observers on Earth, while others can only be seen clearly from space. Some are large and old (Orientale, South Pole-Aitken), others are smaller and younger (Tycho, Aristarchus). Constantly shadowed areas near the poles are hard to photograph but easier to measure with altimetry, while several of the Apollo landing sites, all relatively near the equator, have been imaged at resolutions as high as 25 centimeters (10 inches) per pixel.The shape of the terrain in this animation is based primarily on data from LRO's laser altimeter (LOLA), supplemented by stereo image data from its wide angle camera (LROC WAC) and from Japan's Kaguya mission. The global surface color is from Clementine. || ",
            "hits": 246
        },
        {
            "id": 10843,
            "url": "https://svs.gsfc.nasa.gov/10843/",
            "result_type": "Produced Video",
            "release_date": "2011-10-12T00:00:00-04:00",
            "title": "Science On a Sphere: Evolution of the Moon",
            "description": "NASA's Goddard Space Flight Center and the Lunar Reconnaissance Orbiter present to you a short, narrated Science On a Sphere show depicting the evolution of our moon—all the way from when it was just a ball of magma orbiting the Earth. See the large impacts that formed the basins of the moon, watch as lava seeps out and cools to form the dark-colored maria, and observe how thousands of crater impacts made the moon look like it does today! || ",
            "hits": 98
        },
        {
            "id": 3810,
            "url": "https://svs.gsfc.nasa.gov/3810/",
            "result_type": "Visualization",
            "release_date": "2011-06-13T09:00:00-04:00",
            "title": "Moon Phase and Libration, 2011",
            "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [36.2 KB] || moon.0001.tif (1920x1080) [852.2 KB] || ",
            "hits": 647
        },
        {
            "id": 3833,
            "url": "https://svs.gsfc.nasa.gov/3833/",
            "result_type": "Visualization",
            "release_date": "2011-06-13T00:00:00-04:00",
            "title": "LRO at the June 15, 2011 Lunar Eclipse: Shadow View",
            "description": "For Lunar Reconnaissance Orbiter (LRO), the lunar eclipse on June 15, 2011 is likely to be the longest and darkest of its life. This matters because LRO relies on sunlight to power its systems and instruments. Although it spends half of every orbit on the night side of the Moon, each night side pass lasts only an hour. For the June 15 eclipse, LRO will be in the dark for more than twice as long.During a previous total eclipse, LRO hibernated, turning off all of its instruments to conserve its battery power until the Moon emerged from the Earth's shadow. For the June 15 event, LRO will leave on the Diviner Lunar Radiometry Experiment. Diviner will measure the cooling of the Moon's surface during the eclipse. This unique temperature record is expected to reveal information about the roughness and composition of the swath of lunar surface visible to Diviner's sensors during the eclipse.The visualization archived on this page shows the view of the eclipse along the axis of the Earth's shadow, with the figures of the umbra, penumbra, and lunar and solar paths in the background. This is the view typically used in eclipse diagrams like those produced by Fred Espenak for the NASA Eclipse site.Other visualizations in this series depict the view of the eclipsefrom the Moon, where the event is a solar eclipsethrough a telescope on Earthflying above LRO as Diviner takes temperature measurementsA narrated piece that uses these visualizations is available in entry #10794. For an explanation of lunar eclipses, visit entry #10787. || ",
            "hits": 50
        },
        {
            "id": 3834,
            "url": "https://svs.gsfc.nasa.gov/3834/",
            "result_type": "Visualization",
            "release_date": "2011-06-13T00:00:00-04:00",
            "title": "LRO at the June 15, 2011 Lunar Eclipse: Earth View",
            "description": "For Lunar Reconnaissance Orbiter (LRO), the lunar eclipse on June 15, 2011 is likely to be the longest and darkest of its life. This matters because LRO relies on sunlight to power its systems and instruments. Although it spends half of every orbit on the night side of the Moon, each night side pass lasts only an hour. For the June 15 eclipse, LRO will be in the dark for more than twice as long.During a previous total eclipse, LRO hibernated, turning off all of its instruments to conserve its battery power until the Moon emerged from the Earth's shadow. For the June 15 event, LRO will leave on the Diviner Lunar Radiometry Experiment. Diviner will measure the cooling of the Moon's surface during the eclipse. This unique temperature record is expected to reveal information about the roughness and composition of the swath of lunar surface visible to Diviner's sensors during the eclipse.The visualization archived on this page shows the eclipse as it might appear through a telescope on Earth (except that you can't see LRO in such a telescope). Celestial north is up. As the Moon enters the umbra (the part of the shadow in which the Sun is completely blocked by the Earth), the shadowed side of the Moon appears black while the sunlit side remains bright. Only when the Moon is almost completely within the umbra is it possible to see the faint red glow of the shadowed side, some 10,000 times fainter than the sunlit Moon. The redness is sunlight filtered and refracted by Earth's atmosphere. The same effect reddens sunrises and sunsets on Earth.Other visualizations in this series depict the view of the eclipsefrom the Moon, where the event is a solar eclipsealong the shadow line, with the figures of the umbra, penumbra, and lunar and solar pathsflying above LRO as Diviner takes temperature measurementsA narrated piece that uses these visualizations is available in entry #10794. For an explanation of lunar eclipses, visit entry #10787. || ",
            "hits": 86
        },
        {
            "id": 3731,
            "url": "https://svs.gsfc.nasa.gov/3731/",
            "result_type": "Visualization",
            "release_date": "2010-06-21T00:00:00-04:00",
            "title": "LOLA: Lunar Topography in Natural Color",
            "description": "This animation is a brief tour of several prominent features of the Moon's terrain: Tycho crater, the south pole, and the South Pole-Aitken basin. It is match-moved to a companion piece showing the terrain elevations in false color.This is an update of animation 3594, which was produced before the launch of Lunar Reconnaissance Orbiter. Except for the Tycho crater inset, the elevation map in this updated version is based entirely on early results of the Lunar Orbiter Laser Altimeter onboard LRO.The surface appearance is derived from photographs taken by the Clementine spacecraft. Although it shows the visible surface in natural color, this animation does not depict realistic sunlight and shadows. This is especially significant near the poles, where certain parts of the terrain can be in permanent shadow and would never be fully visible in the manner depicted here. || ",
            "hits": 194
        },
        {
            "id": 3727,
            "url": "https://svs.gsfc.nasa.gov/3727/",
            "result_type": "Visualization",
            "release_date": "2010-06-11T00:00:00-04:00",
            "title": "LOLA Lunar Topography in False Color",
            "description": "This animation is a brief tour of several prominent features of the Moon's terrain: Tycho crater, the south pole, and the South Pole-Aitken basin. The height of the terrain is color-coded, with blues and greens representing low altitudes and reds representing high altitudes. The view is match-moved to a companion piece showing the Moon in natural colors.This is an update of animation 3582, which was produced before the launch of Lunar Reconnaissance Orbiter. Except for the Tycho crater inset, the elevation map in this updated version is based entirely on early results of the Lunar Orbiter Laser Altimeter onboard LRO. These results already represent a substantial improvement in our knowledge of the Moon's topography. || ",
            "hits": 130
        },
        {
            "id": 3690,
            "url": "https://svs.gsfc.nasa.gov/3690/",
            "result_type": "Visualization",
            "release_date": "2010-03-28T00:00:00-04:00",
            "title": "Lunar Reconnaissance Orbiter Releases Data to the Planetary Data System",
            "description": "On March 15, 2010, Lunar Reconnaissance Orbiter (LRO) released its first installment of scientific data to NASA's public archive for planetary data, the Planetary Data System (PDS). This animation highlights several of the datasets made available through the PDS by the LOLA, LEND, and Diviner instruments on LRO. || ",
            "hits": 103
        },
        {
            "id": 3686,
            "url": "https://svs.gsfc.nasa.gov/3686/",
            "result_type": "Visualization",
            "release_date": "2010-03-15T00:00:00-04:00",
            "title": "LRO/LOLA Lunar South Pole Flyover",
            "description": "The Lunar Reconnaissance Oribiter (LRO) was launched on June 18, 2009. Its mission is to map the moon's surface, find safe landing sites, locate potential resources, characterize the radiation environment, and demonstrate new technology. One of the instruments on board is the  Lunar Orbiter Laser Altimeter (LOLA) which measures landing site slopes, lunar surface roughness, and has begun generation of a high resolution 3D map of the Moon.This visualization uses Clementine data for the global view of the moon, but then transitions to using only LRO/LOLA DEM with a neutral gray texture when flying around the lunar south pole. The DEM by itself creates an amazingly realistic view of the lunar southpole. As better maps are created from the other instruments aboard LRO, an even clearer picture of the moon will emerge.Please note that this visualization is match-frame rendered to The Moon's South Pole in 3D via LRO/LOLA First Light Data (#3633). || ",
            "hits": 109
        },
        {
            "id": 3633,
            "url": "https://svs.gsfc.nasa.gov/3633/",
            "result_type": "Visualization",
            "release_date": "2009-09-16T00:00:00-04:00",
            "title": "The Moon's South Pole in 3D via LRO/LOLA First Light Data",
            "description": "The Lunar Reconnaissance Oribiter (LRO) was launched on June 18, 2009. Its mission is to map the moon's surface, find safe landing sites, locate potential resources, characterize the radiation environment, and demonstrate new technology. One of the instruments on board is the  Lunar Orbiter Laser Altimeter (LOLA) which measures landing site slopes, lunar surface roughness, and has begun generation of a high resolution 3D map of the Moon. The animation depicted here is the beginning of  LOLA's mapping project and shows the lunar south pole through digital elevation map data collected by the  LOLA instrument during the spacecraft commissioning phase. During the commissioning phase, LRO was in a highly elliptical orbit coming closer to the lunar south pole than the north pole. Furthermore, since  LOLA uses laser pulses to measure the surface, the accuracy of its measurements are greatly affected by the instrument's distance to the surface. This is why there is virtually no data of the lunar north pole, and much better coverage of the south pole. The topographic data shown here is currently processed to show at approximately 30 meters per pixel.The colors in this animation depict the relative heights of the lunar surface with respect to the surface mean. Warm colors (brown, red, magenta, and tan) indicate areas above the mean. Cooler colors (green, cyan, blue, and violet) are areas below the mean. || ",
            "hits": 178
        },
        {
            "id": 3621,
            "url": "https://svs.gsfc.nasa.gov/3621/",
            "result_type": "Visualization",
            "release_date": "2009-07-27T00:00:00-04:00",
            "title": "LRO Transition from Earth-Centered to Moon-Centered Coordinates",
            "description": "This animation illustrates the solution to a human factors problem in the visualization of an orbit path, in this case the launch and lunar orbit insertion of the Lunar Reconnaissance Orbiter satellite.The visualization (found HERE) shows LRO orbiting the Earth, traveling from the Earth to the moon, and entering lunar orbit. Throughout the visualization, a trail is drawn to show LRO's path. This trail is a history of LRO's motion.The viewer's expectation is that LRO first travels in a circular orbit centered on the Earth, then follows a smoothly curving path connecting the Earth to the moon, and finally enters an elliptical orbit around the moon. The problem for the animator is that an accurate trail satisfying all of these expectations is impossible to draw in a single coordinate system. A trail drawn in Earth-centered coordinates forms a looping, spring-like path when LRO enters lunar orbit, and a trail drawn in moon body-fixed coordinates becomes disconnected from the Earth and precesses through space.Simply switching from one coordinate system to the other would make the trail appear to jump suddenly and dramatically. Creating a hybrid trail would leave a visually confusing elbow in LRO's path.The solution illustrated here is to morph the trail from one coordinate system to the other. The blue trail is the Earth-centered path, the orange trail is the moon body-fixed path, and the white trail is the morph between the two. In the visualization, the Earth trail shortens, disconnecting it from the Earth, and then morphs over about 400 frames into the moon body-fixed trail. With careful timing, the result is a visually seamless transition from one coordinate system to the other.Notice that the difference in coordinate systems creates no ambiguity about the present position of LRO at any given time. LRO is always at the intersection of the trails. The problem arises when attempting to depict the history of its motion. That history takes different shapes in coordinate systems that move relative to one another.An animation showing LRO's entire path in both coordinate systems simultaneously can be found HERE. || ",
            "hits": 168
        },
        {
            "id": 3618,
            "url": "https://svs.gsfc.nasa.gov/3618/",
            "result_type": "Visualization",
            "release_date": "2009-07-17T00:00:00-04:00",
            "title": "LRO in Earth Centered and Moon Centered Coordinates",
            "description": "This visualization shows the Lunar Reconnaissance Orbiter (LRO) orbit insertion from two different points of view (i.e., coordinate systems): Earth centered inertial coordinates and moon centered fixed coordinates. Orbit trails are shown in bright colors where the orbits have been and in darker colors for where the orbits will be. At any particular time, LRO is exactly at the intersection of the two orbit trail curves. The Earth centered coordinates are in blue and the moon centered coordinate are in orange.Why are there two different trails?Because the moon is moving, the moon centered coordinate system is moving. If the moon was stationary with respect to the Earth, both trails would look the same; but since the moon is moving, the moon's trail is always moving and the trails look different.Think of LRO orbiting the moon. From the moon's perspective, it's just going in an ellipse around the moon. In this case, the observation point (the moon) is moving with LRO. But, from the Earth's perspective, if you plotted out the trail of LRO, you would get a series of loops as LRO goes around the moon and as the moon moves through the sky.Animating an orbit trail that changes between two discrete coordinate systems is a challenge. A discontinuity arises if you just switch over from one trail to another. To animate a smooth transition one solution is to carefully select sections of the Earth centered and moon centered curves and then morph from the Earth centered curve section to the moon centered curve section while the animation was playing. This technique was used here as well. || ",
            "hits": 192
        },
        {
            "id": 3620,
            "url": "https://svs.gsfc.nasa.gov/3620/",
            "result_type": "Visualization",
            "release_date": "2009-07-16T00:00:00-04:00",
            "title": "Apollo Landing Sites, with Shadows",
            "description": "The six Apollo lunar landing sites are all relatively near the equator on the side of the Moon that faces the Earth. Left behind at each site is the lower half of the Lunar Module, called the descent stage. It carried most of the astronauts' supplies and served as the launchpad for their return trip to the Command and Service Module in orbit around the Moon.LROC, the Lunar Reconnaissance Orbiter Camera, will have a number of opportunities to photograph the Apollo landing sites. Despite the excellent half-meter resolution of LROC's narrow angle cameras, the LM descent stage at each site can fill only a few pixels of these images. If photographed when the Sun is low in the lunar sky, however, the long shadow formed by the descent stage is easily discernable.This brief animation shows the locations of the Apollo landing sites, with lengthening shadows as each site approaches lunar nightfall. The lighting simulates the angle of the Sun during the second week of July, 2009, when LROC took its first images of the sites. The gold LM markers are about 20,000 times actual size. || ",
            "hits": 371
        },
        {
            "id": 3603,
            "url": "https://svs.gsfc.nasa.gov/3603/",
            "result_type": "Visualization",
            "release_date": "2009-07-08T00:00:00-04:00",
            "title": "Lunar Reconnaissance Orbiter (LRO) Orbit Insertion - Stereoscopic Version",
            "description": "This visualization shows an example of how the orbit insertion for the Lunar Reconnaissance Orbiter (LRO) might look. LRO launches from Cape Canaveral, then flies around the Earth and on to the moon. Time speeds up during the journey to the moon, then slows again as LRO approaches the moon. LRO begins orbiting the moon and, through a series of several \"burns\", moves in closer to its desired orbit. LRO's initial orbit plane around the moon is parallel to the direction of the moon's travel.This visualization was created before launch using simulated ephemeris data. The ephemeris data driving this visualization was based on a simulated night time launch on 11/24/2008; but, the actual launch may happen during the daytime. In this page the visualization content is offered in two different modes to accomodate stereoscopic systems as: Left and Right Eye separate and Left and Right Eye side-by-side combined on the same frame. || ",
            "hits": 17
        },
        {
            "id": 3577,
            "url": "https://svs.gsfc.nasa.gov/3577/",
            "result_type": "Visualization",
            "release_date": "2009-05-12T00:00:00-04:00",
            "title": "Permanent Shadows on the Moon",
            "description": "As the Earth and Moon orbit around the Sun, there are places on the Moon that never receive direct sunlight. Most of these permanently shadowed regions are at the lunar poles. This animation approximates the permanently shadowned regions pertaining to the Moon's south pole by maintaining a maximum sun angle to the surface of 1.5 degrees. These permanently shadowed areas are of interest because they could hold water ice. (NOTE: South Pole Digital Elevation Maps [DEM] based on publically released JAXA/Selene data.) || ",
            "hits": 350
        },
        {
            "id": 3443,
            "url": "https://svs.gsfc.nasa.gov/3443/",
            "result_type": "Visualization",
            "release_date": "2007-08-27T00:00:00-04:00",
            "title": "Clementine Lunar South Pole",
            "description": "NASA's next moon mission, the Lunar Reconaissance Orbiter (LRO), will pave the way for future lunar missions by taking high resolution data of the entire lunar body. This animation zooms into one region of high interest, the lunar south pole, as seen by the 1994 Clementine mission. The possibility of frozen water is one of many reasons NASA is interested in this potential landing site. However, many of the craters in this area where frozen water sources are most likely to be found are in constant shadow which inhibited Clementine's ability to see into these craters. These shadows are the very dark areas at the poles center as seen in this animation, and one of the moon's secrets on which LRO should shed some light. || ",
            "hits": 117
        },
        {
            "id": 3444,
            "url": "https://svs.gsfc.nasa.gov/3444/",
            "result_type": "Visualization",
            "release_date": "2007-08-27T00:00:00-04:00",
            "title": "Clementine Moon Spin",
            "description": "This animation rotates around a virtual moon showing Clementine data. The first frame and last frame of the animation match up to allow continuous cycling of the rotation. || ",
            "hits": 80
        },
        {
            "id": 3274,
            "url": "https://svs.gsfc.nasa.gov/3274/",
            "result_type": "Visualization",
            "release_date": "2005-10-18T00:00:00-04:00",
            "title": "Hubble Space Telescope Looks at the Moon to Prospect for Resources (Apollo 17 Landing Region)",
            "description": "The Hubble Space Telescope looked at specific areas of the moon prospecting for important minerals that may aid future sustained human presence on the moon. Initial analysis of the data indicate the likely presence of titanium and iron oxides. These minerals can be sources of oxygen, essential for human exploration.This visualization starts with a view of the moon as seen from Earth using a USGS Apollo derived artist rendered texture (airbrushed). The camera then zooms into the Apollo 17 landing region using Clementine data (the outer area after the camera pauses), high resolution HST data (the inner area), and Apollo 17 derived topgraphy.Exposure Time: 2.5 minutesFilters: F250W (250nm), F344N (344nm), F502N (502nm), F658N (658nm)Data from these multiple filters were used to produce the mosaic Apollo 17 landing site image. || ",
            "hits": 80
        },
        {
            "id": 3275,
            "url": "https://svs.gsfc.nasa.gov/3275/",
            "result_type": "Visualization",
            "release_date": "2005-10-18T00:00:00-04:00",
            "title": "Hubble Space Telescope Looks at the Moon to Prospect for Resources (Aristarchus Crater - gray)",
            "description": "My edit: The Hubble Space Telescope was used to gather high resolution multi spectral data of the moon's Aristarchus Crater in order to investigate the possibility of potential oxygen producing minerals on the surface. Identifying such minerals could aid in planning future sustained human missions on the moon. Initial analysis of the data indicate the likely presence of titanium and iron oxides. Both these minerals could be used as oxygen sources essential for human exploration.This visualization starts with a view of the moon as seen from Earth using a USGS Apollo derived artist rendered texture (airbrushed). The camera then zooms into the Aristarchus Crater region. Simulated topography derived from Clementine data is used for relief and high resolution HST data is used for the area of interest. After investigating Aristarchus Crater, the camera then moves over to Schroter's Valley for a brief investigation.This visualization is match rendered with id 3275 so that the color version can be dissolved in or out as needed.Exposure Time: 2.5 minutesFilters: F250W (250nm), F344N (344nm), F502N (502nm), F658N (658nm) || ",
            "hits": 105
        },
        {
            "id": 3276,
            "url": "https://svs.gsfc.nasa.gov/3276/",
            "result_type": "Visualization",
            "release_date": "2005-10-17T00:00:00-04:00",
            "title": "Hubble Space Telescope Looks at the Moon to Prospect for Resources (Aristarchus Crater - color)",
            "description": "The Hubble Space Telescope looked at specific areas of the moon prospecting for important minerals that may aid future sustained human presence on the moon. Initial analysis of the data indicate the likely presence of titanium and iron oxides. These minerals can be sources of oxygen, essential for human exploration. This visualization starts with a view of the moon as seen from Earth using a USGS Apollo derived artist rendered texture (airbrushed). The camera then zooms into the Aristarchus crater region. Clementine derived simulated topography is shown around the outside and HST color imagery is shown filling most of the view. The camera then flies into the crater site using using simulated topgraphy and then over to Schroter's Valley. This visualization is match rendered with animation 3274 so that the color version can be dissolved in or out as needed. The colors are from these HST filter bands: RED = 502/250 nm ratio, GREEN = 502 nm (green), BLUE = 250/502 nm ratio. In the image, blues are—in principle—higher in ilmenite. || ",
            "hits": 85
        },
        {
            "id": 3041,
            "url": "https://svs.gsfc.nasa.gov/3041/",
            "result_type": "Visualization",
            "release_date": "2004-11-01T12:00:00-05:00",
            "title": "Lunar Fly By and Earth Approach",
            "description": "This is an animation flying over the surface of the moon then approaching the earth. It was created in support of a presentation at the National Air and Space Museum (NASM) in October 2004. Scales are not accurate in this visualization. The Earth is about 3 times larger than it would actually appear. The source of the moon texture is unknown; it is thought to be a composite from several missions. The Earth texture was captured as the Galileo spacecraft swung by the Earth in 1990 for a gravity assist on its way to Jupiter. || ",
            "hits": 113
        },
        {
            "id": 3042,
            "url": "https://svs.gsfc.nasa.gov/3042/",
            "result_type": "Visualization",
            "release_date": "2004-11-01T12:00:00-05:00",
            "title": "Lunar Beauty Shot",
            "description": "This is a beauty shot animation flying over the surface of the moon created in support of a series of live interviews about the 2004 lunar eclipse.Scales are not accurate in this visualization.  The Earth is about 3 times larger than it would actually appear.  The source of the moon texture is unknown; it is thought to be a composite from several missions.  The Earth texture was captured as the Galileo spacecraft swung by the Earth in 1990 for a gravity assist on its way to Jupiter. || ",
            "hits": 25
        },
        {
            "id": 3044,
            "url": "https://svs.gsfc.nasa.gov/3044/",
            "result_type": "Visualization",
            "release_date": "2004-11-01T12:00:00-05:00",
            "title": "Apollo Lunar Landing Sites",
            "description": "This visualization shows a fly by of the lunar surface highlighting each Apollo lunar landing site. || ",
            "hits": 209
        },
        {
            "id": 676,
            "url": "https://svs.gsfc.nasa.gov/676/",
            "result_type": "Visualization",
            "release_date": "1999-07-23T12:00:00-04:00",
            "title": "Airbrushed Moon",
            "description": "True color moon Rotation (1 minute) using airbrushed lunar surface texture map. || True Color Moon Rotating (1 minute) using Clementinesurface texture map || a000676.00010_print.png (720x480) [279.9 KB] || a000676_thm.png (80x40) [3.3 KB] || a000676_pre.jpg (320x242) [8.1 KB] || a000676_pre_searchweb.jpg (320x180) [40.6 KB] || a000676.webmhd.webm (960x540) [13.9 MB] || a000676.dv (720x480) [224.4 MB] || a000676.mp4 (640x480) [12.1 MB] || a000676.mpg (352x240) [8.5 MB] || ",
            "hits": 80
        },
        {
            "id": 678,
            "url": "https://svs.gsfc.nasa.gov/678/",
            "result_type": "Visualization",
            "release_date": "1999-07-23T12:00:00-04:00",
            "title": "False Color Moon Rotation Using Clementine Surface Texture Map",
            "description": "A rotating moon with a false color surface texture map from Clementine data. || a000678.00010_print.png (720x480) [545.2 KB] || a000678_thm.png (80x40) [4.0 KB] || a000678_pre.jpg (320x242) [8.6 KB] || a000678_pre_searchweb.jpg (320x180) [61.0 KB] || a000678.webmhd.webm (960x540) [9.2 MB] || a000678.mp4 (640x480) [11.4 MB] || a000678.dv (720x480) [205.9 MB] || a000678.mpg (352x240) [8.1 MB] || ",
            "hits": 68
        },
        {
            "id": 679,
            "url": "https://svs.gsfc.nasa.gov/679/",
            "result_type": "Visualization",
            "release_date": "1999-07-23T12:00:00-04:00",
            "title": "Lunar Prospector Crash Site in False Color Rotation with Flip",
            "description": "False color moon rotation with flip showing crash site of the Lunar Prospector. || Lunar Prospector crash site in False Color Rotate with Flip || a000679.00010_print.png (720x480) [507.6 KB] || a000679_thm.png (80x40) [4.1 KB] || a000679_pre.jpg (320x242) [8.8 KB] || a000679_pre_searchweb.jpg (320x180) [61.3 KB] || a000679.webmhd.webm (960x540) [6.3 MB] || a000679.dv (720x480) [155.6 MB] || a000679.mp4 (640x480) [8.7 MB] || a000679.mpg (352x240) [5.4 MB] || ",
            "hits": 69
        },
        {
            "id": 681,
            "url": "https://svs.gsfc.nasa.gov/681/",
            "result_type": "Visualization",
            "release_date": "1999-07-23T12:00:00-04:00",
            "title": "Rotating False Color Moon with Flip Showing the South Pole",
            "description": "False color moon from Lunar Prospector data with flip showing the south pole, site of the Lunar Prospector crash site. (unmarked) || ",
            "hits": 181
        },
        {
            "id": 682,
            "url": "https://svs.gsfc.nasa.gov/682/",
            "result_type": "Visualization",
            "release_date": "1999-07-23T12:00:00-04:00",
            "title": "False Color Moon Rotation with Flip Showing Crash Site of the Lunar Prospector",
            "description": "False color moon from Lunar Prospector data with flip showing crash site of the Lunar Prospector || ",
            "hits": 72
        },
        {
            "id": 683,
            "url": "https://svs.gsfc.nasa.gov/683/",
            "result_type": "Visualization",
            "release_date": "1999-07-23T12:00:00-04:00",
            "title": "False Color Moon Rotation with Flip Showing the South Pole",
            "description": "False color moon from Lunar Prospector data with flip showing the south pole. || False Color (Lunar Prospector) with Flip showingthe South Pole (crash site). || a000683.00010_print.png (720x480) [508.1 KB] || a000683_thm.png (80x40) [4.1 KB] || a000683_pre.jpg (320x242) [9.2 KB] || a000683_pre_searchweb.jpg (320x180) [60.8 KB] || a000683.webmhd.webm (960x540) [7.9 MB] || a000683.dv (720x480) [157.5 MB] || a000683.mp4 (640x480) [8.7 MB] || a000683.mpg (352x240) [5.9 MB] || ",
            "hits": 58
        },
        {
            "id": 79,
            "url": "https://svs.gsfc.nasa.gov/79/",
            "result_type": "Visualization",
            "release_date": "1995-06-09T12:00:00-04:00",
            "title": "Lunar Rotation and Flyby from Clementine Data (with route map)",
            "description": "Clementine was a joint project between the Strategic Defense Initiative Organization and NASA. The objective of the mission was to test sensors and spacecraft components under extended exposure to the space environment and to make scientific observations of the Moon and the near-Earth asteroid 1620 Geographos.  Clementine was launched on 25 January 1994 at 16:34 UTC (12:34 PM EDT) from Vandenberg AFB aboard a Titan II G rocket.  After two Earth flybys, lunar insertion was achieved on February 21. Lunar mapping took place over approximately two months, in two parts. The first part consisted of a 5 hour elliptical polar orbit with a perilune of about 400 km at 28 degrees S latitude. After one month of mapping the orbit was rotated to a perilune of 29 degrees N latitude, where it remained for one more month. This allowed global imaging as well as altimetry coverage from 60 degrees S to 60 degrees N. || ",
            "hits": 117
        },
        {
            "id": 80,
            "url": "https://svs.gsfc.nasa.gov/80/",
            "result_type": "Visualization",
            "release_date": "1995-06-09T12:00:00-04:00",
            "title": "Lunar Rotation and Flyby from Clementine Data",
            "description": "Clementine was a joint project between the Strategic Defense Initiative Organization and NASA. The objective of the mission was to test sensors and spacecraft components under extended exposure to the space environment and to make scientific observations of the Moon and the near-Earth asteroid 1620 Geographos.  Clementine was launched on 25 January 1994 at 16:34 UTC (12:34 PM EDT) from Vandenberg AFB aboard a Titan II G rocket. After two Earth flybys, lunar insertion was achieved on February 21. Lunar mapping took place over approximately two months, in two parts. The first part consisted of a 5 hour elliptical polar orbit with a perilune of about 400 km at 28 degrees S latitude. After one month of mapping the orbit was rotated to a perilune of 29 degrees N latitude, where it remained for one more month.  This allowed global imaging as well as altimetry coverage from 60 degrees S to 60 degrees N. || ",
            "hits": 92
        }
    ]
}