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Lepsch", "employer": "ADNET Systems, Inc." } ] }, { "role": "Videographer", "people": [ { "name": "Rob Andreoli", "employer": "Advocates in Manpower Management, Inc." } ] }, { "role": "Writer", "people": [ { "name": "Francis Reddy", "employer": "Syneren Technologies" } ] } ], "missions": [], "series": [], "tapes": [], "papers": [], "datasets": [], "nasa_science_categories": [ "Universe" ], "keywords": [ "App", "Ast", "Astrophysics" ], "recommended_pages": [], "related": [ { "id": 13244, "url": "https://svs.gsfc.nasa.gov/13244/", "page_type": "Produced Video", "title": "Hubble’s Brand New Image of Eta Carinae", "description": "In the mid-1800s, mariners sailing the southern seas navigated at night by a brilliant star in the constellation Carina. The star, named Eta Carinae, was the second brightest star in the sky for more than a decade. Those mariners could hardly have imagined that by the mid-1860s the brilliant orb would no longer be visible. Eta Carinae was enveloped by a cloud of dust ejected during a violent outburst named “The Great Eruption.” Because of Eta Carinae's violent history, astronomers have kept watch over its activities. Although Hubble has monitored the volatile superstar for 25 years, it still is uncovering new revelations. Using Hubble to map the ultraviolet-light glow of magnesium embedded in warm gas, astronomers were surprised to discover the gas in places they had not seen it before. For more information, visit https://nasa.gov/hubble Credit: NASA's Goddard Space Flight Center/Paul Morris.Music credits: \"Transcode\" by Lee Groves [PRS], and Peter George Marett [PRS]; Killer Tracks Production Music || ", "release_date": "2019-07-01T09:55:00-04:00", "update_date": "2023-05-03T13:45:51.187206-04:00", "main_image": { "id": 394784, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013200/a013244/13244-Eta_car_SVS_SEARCH_WEB_THUMBNAIL.jpg", "filename": "13244-Eta_car_SVS_SEARCH_WEB_THUMBNAIL.jpg", "media_type": "Image", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 11568, "url": "https://svs.gsfc.nasa.gov/11568/", "page_type": "Produced Video", "title": "Eta Carinae's Homunculus Nebula Now in 3D", "description": "An international team of astronomers has developed a 3D model of a giant cloud ejected by the massive binary system Eta Carinae during its 19th century outburst. Eta Carinae lies about 7,500 light-years away in the southern constellation of Carina and is one of the most massive binary systems astronomers can study in detail. The smaller star is about 30 times the mass of the sun and may be as much as a million times more luminous. The primary star contains about 90 solar masses and emits 5 million times the sun's energy output. Both stars are fated to end their lives in spectacular supernova explosions.Between 1838 and 1845, Eta Carinae underwent a period of unusual variability during which it briefly outshone Canopus, normally the second-brightest star. As a part of this event, which astronomers call the Great Eruption, a gaseous shell containing at least 10 and perhaps as much as 40 times the sun's mass was shot into space. This material forms a twin-lobed dust-filled cloud known as the Homunculus Nebula, which is now about a light-year long and continues to expand at more than 1.3 million mph (2.1 million km/h). Using the European Southern Observatory's Very Large Telescope and its X-Shooter spectrograph, the team imaged near-infrared, visible and ultraviolet wavelengths along 92 separate swaths across the nebula, making the most complete spectral map to date. The researchers have used the spatial and velocity information provided by this data to create the first high-resolution 3D model of the Homunculus Nebula.The shape model was developed using only a single emission line of near-infrared light emitted by molecular hydrogen gas. The characteristic 2.12-micron light shifts in wavelength slightly depending on the speed and direction of the expanding gas, allowing the team to probe even dust-obscured portions of the Homunculus that face away from Earth. || ", "release_date": "2014-07-08T10:00:00-04:00", "update_date": "2023-05-03T13:50:45.782762-04:00", "main_image": { "id": 454554, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011500/a011568/EtaCarinae_STILL.png", "filename": "EtaCarinae_STILL.png", "media_type": "Image", "alt_text": "This animation sequence zooms into a Hubble image of the Homunculus Nebula, then dissolves to the shape model, which rotates to provide views from various angles. Credit: NASA's Goddard Space Flight Center/CI LabWatch this video on the NASA Goddard YouTube channel.", "width": 1920, "height": 1080, "pixels": 2073600 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }