时间:2025-09-17 08:52:39 来源:网络整理编辑:知識
A galaxy is an incredible thing.The vast cosmic objects are born when huge clouds of dust and gas co
A galaxy is an incredible thing.
The vast cosmic objects are born when huge clouds of dust and gas collapse under the weight of their own gravity. Hundreds of billions of stars flicker on, and eventually planets also condense from rings of dust surrounding many of those stars.
Now, a series of newly-processed photos from the Hubble Space Telescope shows a map of star formation in 50 galaxies located within 60 million light-years of Earth.
SEE ALSO:Researchers spot colliding galaxies interacting in the early universeScientists used the Hubble to photograph these galaxies in ultraviolet light, revealing bursts of star formation within them, producing a catalogue that reveals 39 million hot, blue stars and 8,000 star clusters, according to NASA.
"There has never before been a star cluster and a stellar catalog that included observations in ultraviolet light," survey leader Daniela Calzetti said in a NASA statement. The survey is called LEGUS, short for Legacy ExtraGalactic UV Survey.
"Ultraviolet light is a major tracer of the youngest and hottest star populations, which astronomers need to derive the ages of stars and get a complete stellar history," Calzetti said.
The ultraviolet catalogue shows off some truly remarkable visions of the star forming galaxies not all that far away from our own.
A photo of Messier 66, for example, reveals the details of the spiral galaxy's arms standing out in stark relief against Messier 66's glowing center.
But these photos are more than beautiful.
They could also help to answer some serious scientific mysteries surrounding how galaxies themselves form.
"By seeing galaxies in very fine detail — the star clusters — while also showing the connection to the larger structures, we are trying to identify the physical parameters underlying this ordering of stellar populations within galaxies," Calzetti said in the statement.
"Getting the final link between gas and star formation is key for understanding galaxy evolution."
Scientists also hope to use the LEGUS catalogue to help inform research done in the future by the James Webb Space Telescope, the infrared space observatory that will be Hubble's successor when it launches in 2020.
The telescope is expected to help piece together more information about how galaxy clusters evolve in galaxies over time.
"Much of the light we get from the universe comes from stars, and yet we still don't understand many aspects of how stars form," team member Elena Sabbi, said in the statement.
"This is even key to our existence — we know life wouldn't be here if we didn’t have a star around."
Chinese gymnastics team horrifies crowd with human jump rope2025-09-17 08:48
比賽日:瓦爾迪雙響萊斯特42025-09-17 08:47
中國足球名宿吳群立 :世預賽不是去練兵 國內聯賽這樣很不正常2025-09-17 08:42
弗賴堡新晉國腳示好拜仁 :想為德甲最好球隊效力2025-09-17 08:33
Fake news reports from the Newseum are infinitely better than actual news2025-09-17 07:41
馬寧傅明等精英裁判回歸 中超第二階段不請洋哨2025-09-17 07:37
熟悉嗎 ?米蘭12輪不敗後兩連敗 上賽季崩盤再現 ?2025-09-17 07:22
西班牙人VS皇家社會首發:武磊替補 德托馬斯出戰2025-09-17 07:15
Carlos Beltran made a very interesting hair choice2025-09-17 06:41
西班牙人VS皇家社會首發:武磊替補 德托馬斯出戰2025-09-17 06:27
Xiaomi accused of copying again, this time by Jawbone2025-09-17 08:46
熱刺VS伯恩利首發:凱恩孫興慜領銜 搭檔小盧卡斯2025-09-17 08:39
曝河北隊明天集中 俱樂部讓球員自行墊錢訂機票2025-09-17 08:18
巴薩有護身符 ?兩逃疑似點球 西甲唯紅藍未被吹點2025-09-17 08:01
These glasses hide a fitness tracker on your face2025-09-17 07:49
不願陪跑 ?記者:C羅今晚不會出席金球獎頒獎典禮2025-09-17 07:40
法媒 :內馬爾預計因傷休戰六周 2021年提前報銷2025-09-17 07:20
武磊單刀趟大錯失進球良機 主帥和隊友都感到失望2025-09-17 06:46
Hiddleswift finally followed each other on Instagram after 3 excruciating days2025-09-17 06:39
卡裏克談C羅替補 :我和他聊過了 這是球隊的計劃2025-09-17 06:23