OSIRIS-REx – Asteroid Bennu Sample Site Flyovers

Download recorded audio from this media teleconference. (Right-click and select "Save Link As...").NASA is hosting a media teleconference at 3 p.m. EDT Thursday, Sept. 24, to provide an update on the agency’s first attempt to contact the surface of asteroid Bennu and collect a sample next month.The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft will travel to the asteroid’s surface during its first sample collection attempt Oct. 20. Its sampling mechanism will touch Bennu’s surface for several seconds, fire a charge of pressurized nitrogen to disturb the surface, and collect a sample before the spacecraft backs away.Participating in this mission update are:•Thomas Zurbuchen, associate administrator of NASA’s Science Mission Directorate•Lori Glaze, director of NASA's Planetary Science Division•Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson•Mike Moreau, OSIRIS-REx deputy project manager at NASA’s Goddard Space Flight Center•Sandra Freund, OSIRIS-REx mission operations manager at Lockheed Martin SpaceFor more information, go to nasa.gov/osiris-rex or asteroidmission.org. Trailer for the OSIRIS-REx TAG EventUniversal Production Music: "The Glory of Victory" by Frederik WiedmannCredit: NASA/Goddard 1. Zurbuchen - OSIRIS-REx OverviewTop Left: OSIRIS-REx Launching from Cape Canaveral Air Force Station aboard a United Launch Alliance Atlas V 411 rocket on September 8, 2016 at 7:05 pm EDT.Top Right: Image of Bennu was taken by the OSIRIS-REx spacecraft.Center: Image of sample site Nightingale Crater, OSIRIS-REx’s primary sample collection site on asteroid Bennu, overlaid with a graphic of the OSIRIS-REx spacecraft to illustrate the scale of the site.Bottom Left: Image of OSIRIS-REx’s SamCam imager’s field of view as the NASA spacecraft approaches asteroid Bennu’s surface, taking during the second dress rehearsal for sample collection on August 11, 2020.Bottom Center: Illustration of trajectory and configuration of NASA’s OSIRIS-REx spacecraft during Checkpoint rehearsal, which was the first time the mission practiced the initial steps of collecting a sample from asteroid Bennu.Bottom Right: Image of Sierra Gonzalez, Lockheed Martin Systems Engineer, taken April 14, 2020 during the four-hour rehearsal of the Checkpoint maneuver in which OSIRIS-REx came within 125 meters (410 feet) of Bennu’s surface.Credits: NASA/Goddard/University of Arizona/ Lockheed Martin/United Launch Alliance 1. Glaze - Asteroid missions and sample returnTop Left: Apollo sample processors (from left to right) Andrea Mosie, Charis Krysher and Juliane Gross open lunar sample 73002 at NASA's Johnson Space Center in Houston. The Moon rocks inside this tube have remained untouched since they were collected on the surface and brought to Earth by Apollo astronauts nearly 50 years ago.Top Right: Scientist-astronaut Harrison H. Schmitt, Apollo 17 lunar module pilot, collects lunar rake samples at Station 1 during the mission's first spacewalk at the Taurus-Littrow landing site.Center: Illustration showing NASA’s OSIRIS-REx spacecraft descending towards asteroid Bennu to collect a sample of the asteroid’s surface.Bottom Left: Illustration of NASA’s DART spacecraft prior to impact at the Didymos binary system.Bottom Center: Illustration of NASA’s Lucy spacecraft performing a flyby of a Jupiter Trojan.Bottom Right: Illustration of NASA’s Psyche Spacecraft with Five-Panel Array.Credits: NASA/Goddard/JPL-Caltech / Arizona State University/University of Arizona/Johns Hopkins APL/Space Systems Loral/James Blair/Steve Gribben/Peter Rubin 1. Lauretta - OSIRIS-REx AcronymCredit: NASA/Goddard/University of Arizona 2. Lauretta - Asteroid 101955 Bennu rotatingThis rotating mosaic of asteroid Bennu is composed of 40 images captured by the PolyCam imager onboard NASA’s OSIRIS-REx spacecraft over a four-hour period on December 2, 2018. During the observation period, the spacecraft’s range to the center of the asteroid decreased from about 15.3 to 14.6 miles (24.6 to 23.5 km).Credit: NASA/Goddard/University of Arizona 3. Lauretta - Bennu science highlightsCredit: NASA/Goddard/University of Arizona 4. Lauretta - Bennu candidate sites and Nightingale flyoverData provided by NASA/University of Arizona/CSA/York University/MDACredit: NASA/Goddard/SVS 1. Moreau - OSIRIS-REx Matchpoint rehearsalCaptured on August 11, 2020 during the second rehearsal of the OSIRIS-REx mission’s sample collection event, this series of images shows the SamCam imager’s field of view as the NASA spacecraft approaches asteroid Bennu’s surface. The rehearsal brought the spacecraft through the first three maneuvers of the sampling sequence to a point approximately 131 feet (40 meters) above the surface, after which the spacecraft performed a back-away burn.Credit: NASA/Goddard/University of Arizona 2. Moreau - TAG Event timelinePreview of the OSIRIS-REx TAG timeline. To grab a sample of Bennu, OSIRIS-REx will break orbit and perform a series of engine burns in order to safely touch down at site Nightingale.Credit: NASA/Goddard/SVS/CI Lab 3. Moreau - Natural Feature TrackingOSIRIS-REx will autonomously steer itself to site Nightingale using an optical navigation technique called Natural Feature Tracking. Watch video on NFT.Credit: NASA/Goddard/University of Arizona 4. Moreau - Sampling area to ScaleThis artist concept animation shows a size comparison of the planned sample collection area before arriving at Bennu (orange), and after arriving at Bennu (blue). The original mission plan envisioned a sample site with a diameter of 164 feet (50 m). However, the sampling region for site Nightingale is approximately 26 ft (8 m) in diameter. The area safe enough for the spacecraft to touch is the width of a few parking spaces.Credit: NASA/Goddard/CI Lab 5. Moreau - Sampling area Hazard MapsCredit: NASA/Goddard/University of Arizona 6. Moreau - TAG "What If?" HazardsDuring its descent to site Nightingale, OSIRIS-REx could encounter several hazardous scenarios that would prevent it from collecting a sample of asteroid Bennu on its first attempt, including: Wave-Off, TAG on a boulder, and TAG on rocks.Credit: NASA/Goddard/CI Lab 1. Freund - TAGSAM ExplainedOSIRIS-REx descends to the surface of asteroid Bennu to collect a sample of fine-grained material from site Nightingale using its TAGSAM instrument.Credit: NASA/Goddard/CI Lab 2. Freund - Sample StowFollowing collection, OSIRIS-REx will stow its sample of asteroid Bennu for return to Earth in September 2023.Credit: NASA/Goddard/CI Lab 3. Freund - Sample ReturnWhen OSIRIS-REx returns to Earth, it will release the Sample Return Capsule for touchdown in the Utah desert on September 24, 2023.Credit: NASA/Goddard/CI Lab 5. Lauretta - Sample VerificationFollowing TAG, OSIRIS-REx will use SamCam to visually inspect the TAGSAM head and confirm that it has collected a sample from Bennu.Credit: NASA/Goddard/CI Lab 6. Lauretta - Sample Mass MeasurementAfter imaging the TAGSAM head, OSIRIS-REx will perform a spin maneuver with its TAGSAM arm extended to determine the mass of the collected sample.Credit: NASA/Goddard/CI Lab 7. Lauretta - Sample Return Capsule openingClose up of the OSIRIS-REx Sample Return Capsule opening, and the TAGSAM head becoming translucent to reveal material collected from asteroid Bennu.Credit: NASA/Goddard/CI Lab Slate for T-30 press briefingCredit: NASA/Goddard For More InformationSee [NASA.gov](https://www.nasa.gov/osiris-rex) Related pages

After a year of studying asteroid Bennu, the OSIRIS-REx mission chose a location called “Nightingale” as the primary sample collection site.Universal Production Music: “Extreme Measures” by John Sands and Marc Ferrari, “Ice Echoes” by Dominik Luke Marsden Johnson, “Look at the Mirror” by Jonathan FigoliWatch this video on the NASA Goddard YouTube channel.Complete transcript available. Thermal map of asteroid Bennu OSIRIS-REx is a NASA mission to explore near-Earth asteroid Bennu and return a sample to Earth. Prior to arriving at Bennu, mission planners had expected the asteroid’s surface to consist largely of fine particulate material, similar to gravel. When OSIRIS-REx arrived in December 2018, however, it was greeted by a rocky world covered with boulders.This unexpected ruggedness means that there are few places on Bennu where OSIRIS-REx can safely touch down and collect a sample. After a year of studying the asteroid, the mission announced a primary sample collection site, which they designated “Nightingale,” along with a backup site called “Osprey.” In October 2020, OSIRIS-REx will descend to Bennu and attempt to collect up to four-and-a-half pounds of loose material, for return to Earth in 2023.Learn more about the selection of sample site Nightingale. In the thermal map above, asteroid Bennu’s surface temperatures dramatically change from the night side to the day side, experiencing swings of 270 degrees Fahrenheit. The time that it takes for an object to heat up or cool down is determined by its thermal inertia — a property that can be useful in the remote study of planetary bodies.Fine particulate materials like sand or gravel tend to heat up and cool down quickly (low thermal inertia), while solid objects like rocks and boulders do so more slowly (high thermal inertia). By observing how a distant body like Bennu changes temperature over the course of a day, scientists can usually infer the average size of particles on its surface.Before OSIRIS-REx arrived, scientists had observed that Bennu’s surface heats up and cools down relatively quickly, leading them to predict a mean particle size of about 2-3cm. OSIRIS-REx, however, was greeted by a predominantly rocky asteroid, littered with giant boulders. This discrepancy is one of the major surprises of the OSIRIS-REx mission. For More InformationSee [NASA.gov](https://www.nasa.gov/osiris-rex) Related pages

Close-up images of the OSIRIS-REx sample site candidates on asteroid Bennu.Credit: NASA/Goddard/University of Arizona 1. Glaze - Common Themes for Small Bodies ResearchCredit: NASA-HQ 2. Glaze - Bennu global mosaic and sample site candidatesCredit: NASA/Goddard/University of Arizona 1. Lauretta - Bennu global mosaic and sample site candidates (ibid)Credit: NASA/Goddard/University of Arizona 2. Lauretta - Bennu sample site candidate close-upsCredit: NASA/Goddard/University of Arizona 3. Lauretta - The OSIRIS-REx primary sample site, NightingaleCredit: NASA/Goddard/University of Arizona 4. Lauretta - The OSIRIS-REx primary sample site, Nightingale. The center of the site is marked with an X, and a silhouette of the spacecraft is added for scale.Credit: NASA/Goddard/University of Arizona 5. Lauretta - 3D flyover animation of the OSIRIS-REx primary sample site, NightingaleCredit: NASA/Goddard/University of Arizona/CSA/York University/MDA 6. Lauretta - The OSIRIS-REx backup sample site, OspreyCredit: NASA/Goddard/University of Arizona 7. Lauretta - The OSIRIS-REx backup sample site, Osprey. The center of the site is marked with an X, and a silhouette of the spacecraft is added for scale.Credit: NASA/Goddard/University of Arizona 8. Lauretta - 3D flyover animation of the OSIRIS-REx backup sample site, OspreyCredit: NASA/Goddard/University of Arizona/CSA/York University/MDA 1. DellaGiustina - Bennu global image mosaicCredit: NASA/Goddard/University of Arizona 2. DellaGiustina - Bennu global image mosaic, with primary and backup sample sites labeledCredit: NASA/Goddard/University of Arizona 3. DellaGiustina - The OSIRIS-REx primary and backup sample sitesCredit: NASA/Goddard/University of Arizona 4. DellaGiustina - The "sampleability" map for Sites Nightingale and Osprey, showing the location of sampleable material at each site. Blue regions correspond to high sampleability, while red regions correspond to low sampleability.Credit: NASA/Goddard/University of Arizona 1. Moreau - Animation of OSIRIS-REx collecting a sample of BennuCredit: NASA's Goddard Space Flight Center 2. Moreau - Size comparison of the planned sample collection safe zone before arriving at Bennu (orange), and after arriving at Bennu (blue). The safe zone for Site Nightingale is no wider than a few parking spaces. Credit: NASA/Goddard/University of Arizona 3. Moreau - This image shows sample site Nightingale overlaid with a simplified hazard map. The OSIRIS-REx spacecraft uses this map to autonomously detect surface hazards, such as boulders or rocks, while it descends to collect a sample. The green illustrates areas that are free of hazards, and means the spacecraft will continue to the surface. Yellow demonstrates cautionary areas, and red areas contain the most hazards. If the spacecraft predicts it will touch either a yellow or red area, it will stop its descent and back away.Credit: NASA/Goddard/University of Arizona 4. Moreau - OSIRIS-REx Sample Acquisition Campaign scheduleCredit: NASA/Goddard/University of Arizona Data visualization of asteroid Bennu and the OSIRIS-REx sample site candidates.Credit: NASA/Goddard/University of Arizona/CSA/York University/MDA NASA’s OSIRIS-REx mission announced its primary and backup sample collection sites on asteroid Bennu, at a press conference hosted during AGU’s Fall Meeting at 2 p.m. ET, Thursday, Dec. 12.The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft launched on Sept. 8, 2016, and arrived at asteroid Bennu on Dec. 3, 2018. In mid-2020, it will briefly touch down on Bennu’s surface and collect a sample for return to Earth in late 2023.The mission represents a valuable opportunity to learn more about the origins of our solar system, the sources of water and organic molecules on Earth, and the hazards and resources in near-Earth space. The briefing participants are: Lori Glaze, director of planetary science for NASA's Science Mission Directorate at NASA HeadquartersDante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, TucsonDani DellaGiustina, OSIRIS-REx image processing lead scientist at the University of Arizona, Tucson Mike Moreau, OSIRIS-REx deputy project manager at NASA Goddard Space Flight Center For more information, go to nasa.gov/osirisrex or asteroidmission.org For More InformationSee [NASA.gov](https://www.nasa.gov/osiris-rex) Related pages

NASA Science Live: OSIRIS-REx - X Marks the Spot [Episode 13]Air Date: December, 12, 2019Watch this video on the ScienceAtNASA YouTube channel. This episode of NASA Science Live is broadcasting live from AGU in San Francisco. We have breaking news on our satellite OSIRIS-REx which is orbiting an asteroid named Bennu - and some of its mineral fragments could be older than the solar system itself. These microscopic grains of dust could be the same ones that spewed from dying stars and eventually came together to make the Sun and its planets nearly 4.6 billion years ago. And today we'll announce the site where OSIRIS-REx will attempt to collect at least 30 sugar packets worth of dirt and rocks from Bennu's surface. For More InformationSee [NASA.gov](https://www.nasa.gov/osiris-rex) Related pages

Looping animation of asteroid Bennu rotating. This 3D model of Bennu was created using 20cm resolution laser altimetry data and imagery taken by OSIRIS-REx. Short clip of the northern hemisphere of Bennu. This 3D model of Bennu was created using 20cm resolution laser altimetry data and imagery taken by OSIRIS-REx. Short clip of the southern hemisphere of Bennu, highlighting a large boulder nicknamed "BenBen." This 3D model of Bennu was created using 20cm resolution laser altimetry data and imagery taken by OSIRIS-REx. Short clip of the equatorial region of Bennu. This 3D model of Bennu was created using 20cm resolution laser altimetry data and imagery taken by OSIRIS-REx. When NASA’s OSIRIS-REx spacecraft arrived at asteroid Bennu in December 2018, its close-up images confirmed what mission planners had predicted nearly two decades before: Bennu is made of loose material weakly clumped together by gravity, and shaped like a spinning top. This major validation, however, was accompanied by a major surprise. Scientists had expected Bennu’s surface to consist of fine-grained material like a sandy beach, but instead OSIRIS-REx was greeted by a rugged world littered with boulders – the size of cars, the size of houses, the size of football fields.The main science goal of OSIRIS-REx is to briefly touch down on Bennu and collect a sample for return to Earth, but the asteroid’s unexpected roughness could pose a hazard to the spacecraft. Areas for safely touching down are fewer and smaller than anticipated, and OSIRIS-REx will have to navigate to them with unprecedented accuracy.The 3D animations on this page were created using laser altimetry data and imagery of Bennu taken by OSIRIS-REx. For More InformationSee [NASA.gov](https://www.nasa.gov/osiris-rex) Related pages

The visualization begins with a rotating 3D model representation of the asteroid Bennu, created using data from the OSIRIS-REx Laser Altimeter (OLA) instrument. Four candidate sample sites (with labels) are highlighted with PolyCam images.Watch this video on the NASA Goddard YouTube channel. An animated GIF of the asteroid Bennu with labels of the four candidate sites. UNLABELED VERSIONThe visualization begins with a rotating 3D model representation of the asteroid Bennu, created using data from the OSIRIS-REx Laser Altimeter (OLA) instrument. Four candidate sample sites are highlighted with PolyCam images. Print resolution (16k) still image of the candidate sample sites with labels. Print resolution (16k) still image of the candidate sample sites without labels. Pictured are the four candidate sample collection sites on asteroid Bennu selected by NASA’s OSIRIS-REx mission. Site Nightingale (top left) is located in Bennu’s northern hemisphere. Sites Kingfisher (top right) and Osprey (bottom left) are located in Bennu’s equatorial region. Site Sandpiper (bottom right) is located in Bennu’s southern hemisphere. In December 2019, one of these sites will be chosen for the mission’s touchdown event.Credit: NASA/Goddard/University of Arizona Candidate Bennu sample site - OspreyInstrument Used: OCAMS (PolyCam) Candidate Bennu sample site - KingfisherInstrument Used: OCAMS (PolyCam) Candidate Bennu sample site - NightingaleInstrument Used: OCAMS (PolyCam) Candidate Bennu sample site - SandpiperInstrument Used: OCAMS (PolyCam) Visualization of a rotating 3D model representation of the asteroid Bennu, created using data from the OSIRIS-REx Laser Altimeter (OLA) instrument. Global map of asteroid Bennu, showing the locations of the final four candidate sample sites.Credit: NASA/Goddard/University of Arizona Candidate Sample Site Labels OSIRIS-REx is a mission to study and map near-Earth asteroid Bennu. Its primary science objective is to collect a sample of Bennu in mid 2020 and return it to Earth in late 2023. In preparation, mission planners have identified four candidate sample sites on Bennu's rocky surface where OSIRIS-REx could briefly touch down to collect its sample. The mission will down-select to the final two sites – a primary and a backup – in December 2019. Like the mythological Bennu bird for which the asteroid is named, all of the candidate sample sites refer to birds that can be found in Egypt.Learn more about the candidate sample sites on Bennu. For More InformationSee [NASA.gov](https://www.nasa.gov/press-release/nasa-mission-selects-final-four-site-candidates-for-asteroid-sample-return) Related pages