Webb Reveals Never-Before-Seen Details in Cassiopeia A : 無料・フリー素材/写真
Webb Reveals Never-Before-Seen Details in Cassiopeia A / 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 | Stars: always making a dramatic exit!Webb’s powerful infrared eye has captured never-before-seen detail of Cassiopeia A (Cas A), the remnant of a massive star that exploded about 340 years ago - from our perspective here on Earth. (Despite being 11,000 light-years away, this supernova may have been visible to the naked eye when it took place, something that has not been seen in our galaxy since.)Let’s dissect the image: The left side of the image (shown in orange) marks where ejected material from the exploded star is ramming into surrounding gas and dust. Within that outer shell is material from the star itself, including elements like oxygen, argon and neon. What’s that green loop on the right? Scientists are still puzzling out its unexpected shape and complexity.As the youngest known remnant from an exploded, massive star in our galaxy, Cas A offers unique clues into a star’s death. By studying Cas A, Webb astronomers may also learn more about the origins and production of cosmic dust — which forms the elements we’re made of.Learn more: go.nasa.gov/3zDsve8Credit: NASA, ESA, CSA, D. Milisavljevic (Purdue), T. Temim (Princeton), I. De Looze (Ghent University), with image processing by J. DePasquale (STScI)Image description: A roughly square image is rotated clockwise about 45 degrees, with solid black in the corners. Within the image is a roughly circular nebula with complex structure. On the circle’s exterior, particularly at the top and left, lie curtains of material glowing orange. Interior to this outer shell lies a ring of mottled filaments of bright pink studded with clumps and knots. At center right, a greenish loop extends from the right side of the ring into the central cavity. Translucent wisps of blue, green and red are throughout the image.Note: this image is presented in this orientation to match other telescope's images of this object for easier comparison. |
| 撮影日 | 2023-04-07 10:17:43 |
| 撮影者 | James Webb Space Telescope , Greenbelt, MD, USA |
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