您现在的位置是:娛樂 >>正文
【】
娛樂4人已围观
简介NASA scientists may have just solved the galactic mystery of how a huge wave of gas formed in a clus ...
NASA scientists may have just solved the galactic mystery of how a huge wave of gas formed in a cluster of galaxies more than 200,000 light-years away.。
The answer has to do with a cosmic near collision that occurred billions of years ago.。
SEE ALSO:Enjoy this beautiful photo of a starburst galaxy, courtesy of Hubble 。Scientists working with NASA's Chandra X-Ray Observatory and other teams now think that the wave of gas seen in the Perseus galaxy cluster was created when a smaller cluster of galaxies "grazed" the Perseus cluster sometime in its past, causing some of its gas to "slosh" around, NASA said in a statement.。
"The wave we've identified is associated with the flyby of a smaller cluster, which shows that the merger activity that produced these giant structures is still ongoing," NASA's Stephen Walker said. 。


The findings are detailed in a new study published in the journal 。 The findings are detailed in a new study published in the journal。
Thanks for signing up!。

An annotated view of the wave in the galaxy cluster.Credit: NASA's Goddard Space Flight Center/Stephen Walker et al.。
The researchers put together the simulations to try to explain how the wave of gas formed. One of those simulations showed a galaxy cluster brushing by the Perseus cluster and displacing some of its gas.。
"The flyby creates a gravitational disturbance that churns up the gas like cream stirred into coffee, creating an expanding spiral of cold gas," NASA said in the statement.。
"After about 2.5 billion years, when the gas has risen nearly 500,000 light-years from the center, vast waves form and roll at its periphery for hundreds of millions of years before dissipating." 。
If all of this is a little difficult for you to visualize, just think of the wave as something like a giant Kelvin-Helmholtz cloud formation on Earth, which look like cartoon-versions of ocean waves in the sky.。Via Giphy 。
Via Giphy。
Featured Video For You。Watch clouds move above Saturn's largest moon in new NASA video。
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/41e5999899.html
相关文章
Florida hurricane forecast remains uncertain, but trends in state's favor
娛樂For days, a war has been raging between two of the premiere computer models used to help predict the ...
【娛樂】
阅读更多Grocery shoppers get a taste of life below the poverty line in new ad campaign
娛樂The tech industry has put San Francisco at the heart one of the biggest waves of wealth creation in ...
【娛樂】
阅读更多Tsunami warning issued for Fukushima, Japan after powerful earthquake
娛樂A magnitude 6.9 earthquake struck off the coast of Fukushima, Japan, early Tuesday morning local tim ...
【娛樂】
阅读更多
热门文章
- Did our grandparents have the best beauty advice?
- Being sexist can be bad for a man's psychological health, too
- Tsunami warning issued for Fukushima, Japan after powerful earthquake
- 'Bleak' — Most students have trouble identifying fake news, Stanford study finds
- Twitter grants everyone access to quality filter for tweet notifications
- 'Bleak' — Most students have trouble identifying fake news, Stanford study finds
最新文章
Major earthquake and multiple aftershocks rock central Italy
Grandma finally gets Christmas celebration she's always wanted
Star Wars is political, and it always has been
Bumbling Trump adviser Kris Kobach's secret plan for America, revealed
More than half of women in advertising have faced sexual harassment, report says
Being sexist can be bad for a man's psychological health, too