Embed Notice

HTML Code

<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://m.universetoday.com/users/fraser/statuses/113828563785964805">Fraser Cain (fraser@m.universetoday.com)'s status on Wednesday, 15-Jan-2025 06:12:14 JST</a><a href="https://m.universetoday.com/@fraser" title="fraser@m.universetoday.com"><img src="https://gnusocial.jp/avatar/102904-48-20230301112101.webp" width="48" height="48" alt="Fraser Cain" style="position: absolute; left: 0; top: 0;">Fraser Cain</a></section><article><p>Thousands of years ago, a supernova detonated in the constellation Cassiopeia. The flash of light traveled outward, passing through the gas and dust that had been shed by the star before it exploded. Thanks to JWST, astronomers can see how the pulse of radiation continues outward, causing regions of the gas to glow in infrared radiation. The nebula looks like layers of an onion, which could be caused by interstellar magnetic fields interacting with the material.</p><p><a href="https://webbtelescope.org/contents/news-releases/2025/news-2025-102" rel="nofollow noreferrer">https://webbtelescope.org/contents/news-releases/2025/news-2025-102</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/4375040#notice-8556407">In conversation</a><time datetime="2025-01-15T06:12:14+09:00" title="Wednesday, 15-Jan-2025 06:12:14 JST">about 17 days ago</time> <span>from <span><a href="https://m.universetoday.com/@fraser/113828563785964805" rel="external" title="Sent from m.universetoday.com via ActivityPub">m.universetoday.com</a></span></span><a href="https://m.universetoday.com/@fraser/113828563785964805">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/3916079">These shimmering cosmic curtains show interstellar gas and dust that has been heated by the flashbulb explosion of a long-ago supernova. The gas then glows infrared light in what is known as a thermal light echo. As the supernova illumination travels through space at the speed of light, the echo appears to expand. NASA’s James Webb Space Telescope observed this light echo in the vicinity of the supernova remnant Cassiopeia A three separate times, in essence creating a 3D scan of the interstellar material. Note that the field of view in the top row is rotated slightly clockwise relative to the middle and bottom rows, due to the roll angle of the Webb telescope when the observations were taken.  Credits Image NASA, ESA, CSA, STScI, Jacob Jencson (Caltech/IPAC)</a></label><br><a href="https://m.universetoday.com/system/media_attachments/files/113/828/563/736/619/932/original/41d0cb1c1924ee6d.jpg" rel="external">https://m.universetoday.com/system/media_attachments/files/113/828/563/736/619/932/original/41d0cb1c1924ee6d.jpg</a></li></ol></footer></blockquote>

Corresponding Notice

Embed this notice
Fraser Cain (fraser@m.universetoday.com)'s status on Wednesday, 15-Jan-2025 06:12:14 JST Fraser Cain
Thousands of years ago, a supernova detonated in the constellation Cassiopeia. The flash of light traveled outward, passing through the gas and dust that had been shed by the star before it exploded. Thanks to JWST, astronomers can see how the pulse of radiation continues outward, causing regions of the gas to glow in infrared radiation. The nebula looks like layers of an onion, which could be caused by interstellar magnetic fields interacting with the material.
https://webbtelescope.org/contents/news-releases/2025/news-2025-102
In conversationabout 17 days ago from m.universetoday.compermalink
Attachments
1. These shimmering cosmic curtains show interstellar gas and dust that has been heated by the flashbulb explosion of a long-ago supernova. The gas then glows infrared light in what is known as a thermal light echo. As the supernova illumination travels through space at the speed of light, the echo appears to expand. NASA’s James Webb Space Telescope observed this light echo in the vicinity of the supernova remnant Cassiopeia A three separate times, in essence creating a 3D scan of the interstellar material. Note that the field of view in the top row is rotated slightly clockwise relative to the middle and bottom rows, due to the roll angle of the Webb telescope when the observations were taken. Credits Image NASA, ESA, CSA, STScI, Jacob Jencson (Caltech/IPAC)
  https://m.universetoday.com/system/media_attachments/files/113/828/563/736/619/932/original/41d0cb1c1924ee6d.jpg

Public

Embed Notice

HTML Code

Corresponding Notice