Europa CO2 Distribution (NIRCam and NIRSpec IFU Image) : 無料・フリー素材/写真
Europa CO2 Distribution (NIRCam and NIRSpec IFU Image) / James Webb Space Telescope
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | On the icy crust of Jupiter's moon Europa, Webb has discovered carbon dioxide that likely originated in the liquid water ocean below. The carbon dioxide was found to be most abundant in an area called Tara Regio, where there is evidence of material exchanging between Europa’s internal ocean and its crust. Carbon dioxide isn’t stable on Europa’s surface, so scientists believe it was deposited fairly recently, geologically speaking. Understanding the chemistry of this ocean could help determine if it is a good place for life as we know it.Webb builds off Juno, Galileo, New Horizons and other spacecraft who have taken close-ups of Europa. In Oct. 2024, NASA plans to launch the Europa Clipper mission, which will perform dozens of close flybys of Europa to further investigate if it could have conditions for life.Read more: www.nasa.gov/feature/goddard/2023/nasa-s-webb-finds-carbo...This image: Four views of Europa. Far left: This image shows Europa as a fuzzy blue and white sphere. There are darker blue patches in most of the northern hemisphere, as well as two distinct white patches along the southern hemisphere. Note that Europa appears hazy because it is very small compared to its distance from us (390.4 million miles, or 628.3 million km!). Missions like Voyager and Juno get up close to the bodies they are observing, giving them a high-resolution view. Other three images: Three compositional maps derived from Webb’s NIRSpec instrument data. These pixelated, circular maps each feature white, blue, or orange squares of various shades. The white pixels represent carbon dioxide ice. The pixelation is due to Europa being 10x10 pixels across the field of view, but there’s amazing data—a full NIRSpec spectrum—in each pixel!Image credit: NASA, ESA, CSA, Geronimo Villanueva (NASA-GSFC), Samantha K Trumbo (Cornell University. Image processing: Geronimo Villanueva, Alyssa Pagan (STScI)Image description: Four square panels are arranged in a 4x1 grid. Far left features a blue-and-white sphere against a black background, reminiscent of the “Blue Marble” picture of Earth. With fuzzy edges, this sphere has darker blue patches in the northern hemisphere and two large white patches in the southern hemisphere. Below it is the label: “Europa (NIRCam).” Each of the second, third, and fourth panels has a pixelated, roughly circular image of small white, blue, or orange squares. The orange or blue squares appear in various shades. Several squares are a mix of both orange and blue. In each of these panels, there are slight variations in the arrangement of the colored squares. Second from left, the label below the image reads: “Crystalline C O 2 ice at 2.7 microns.” Second from right, the label below the image reads: “Crystalline C O 2 ice at 4.27 microns.” At far right, the label below the image reads: “Complex C O 2 ice at 4.25 microns.” |
| 撮影日 | 2023-09-21 14:33:10 |
| 撮影者 | James Webb Space Telescope , Greenbelt, MD, USA |
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