您现在的位置是:娛樂 >>正文
【】
娛樂34759人已围观
简介These dust clouds — intense plumes of citron, blush, and magenta — are not signs of bloo ...
These dust clouds — intense plumes of citron, blush, and magenta — are not signs of blooming as they tend to be on Earth but the final sputters of a dying star in this new deep space image captured by the James Webb Space Telescope.
At the center of this blossom-like structure is a blue-white star, born 30 times more massive than the sun. Because it is old and close to collapsing into a black hole, it burns hotter and generates powerful gas winds. It's called Wolf-Rayet 124, a star in the midst of a rare and brief phase before going supernova.
Scientists released the new snapshot during the South by Southwest Conference & Festivals on Tuesday in Austin, Texas. The event included a NASA and European Space Agency expert panel to discuss the telescope’s latest scientific discoveries.
"This is Carl Sagan's stardust concept, the fact that iron in your blood and the calcium in your bones were literally forged inside of a star that exploded billions of years ago," said NASA astrophysicist Amber Straughn at the conference. "That's what we're seeing in this new image — that dust is spreading out into the cosmos and will eventually create planets, and this is how we got here."
SEE ALSO:Webb telescope just saw more galaxies in a snapshot than Hubble's deepest lookTweet may have been deleted
Webb, the preeminent observatory in the sky, was built to see an early period of the universe, using a large primary mirror that can detect invisible light at infrared wavelengths. A lot of dust and gas in space obscures the view to extremely distant and inherently dim light sources, but infrared waves can penetrate through the clouds.
Want more scienceand tech news delivered straight to your inbox? Sign up for Mashable's Top Stories newslettertoday.
The star showcased in the new image is located some 15,000 light-years away in the constellation Sagittarius. It is wrapped in a cocoon of gas and dust — shedded layers of the star commingled with complicated elements found deep inside a star like carbon. So far, it has sloughed off 10 sun's-worth of material, according to researchers.
Related Stories
- Webb telescope just saw more galaxies in a snapshot than Hubble's deepest look
- Webb telescope sees rare star duo rife with dust rings
- Spectacular Webb telescope image shows a stellar death like never before
- Webb telescope sees bizarre galaxy cluster triplets
- A mistake on the Webb telescope just led to a surprising discovery
"Iron in your blood and the calcium in your bones were literally forged inside of a star that exploded billions of years ago."
Tweet may have been deleted
A previous Webb study makes a strong case that Wolf-Rayet stars produce carbon-rich dust molecules, the same chemical that largely makes up humans and other life on Earth. Astronomers study these rare Wolf-Rayet stars for insight into how cosmic dust spreads through the universe, seeding new galaxies and stars, said Macarena Garcia Marin, an ESA scientist on the panel.
With Webb, scientists will try to better understand dust-making factories like this special star.
"We know that when the stars are this big, they live fast. They go through different stages in very quick time," said Marin. "And only some of them end up being in this Wolf-Rayet (phase) to later on become a supernova."
TopicsNASA
Tags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“夫榮妻貴網”。http://new.maomao321.com/news/76c58599338.html
相关文章
This coloring book is here for all your relationship goals
娛樂LONDON -- We are living through the golden age of celebrity relationships. Gone are the days of tort ...
【娛樂】
阅读更多National Sundae Day has come not a moment too soon
娛樂Friday is National Sundae Day and boy, do we need it. SEE ALSO:Good luck, America: You just elected ...
【娛樂】
阅读更多Even faster charging tech will juice phones from 0 to 50% in 15 minutes
娛樂Fact: Nobody likes waiting for their phone to charge up.Which is why phones with Qualcomm's Quick Ch ...
【娛樂】
阅读更多
热门文章
- Samsung Galaxy Note7 teardown reveals the magic behind the phone's iris scanner
- Global warming gobbled up a piece of sea ice the size of Alaska and Texas combined
- You will be watched by Donald Trump
- Please stop arguing about the politics of safety pins
- Make money or go to Stanford? Katie Ledecky is left with an unfair choice.
- Irish couple live tweets journey to receive legal abortion in England
最新文章
What brands need to know about virtual reality
7 smoky beers to challenge your taste buds
Snapchat's Spectacles vending machine broke just hours after launching
Donald Trump and the media: An unstoppable DDoS attack
This chart shows just how high Simone Biles can jump
Sia singing 'Satisfied' for 'Hamilton Mixtape' is exactly what you need today