时间:2026-05-23 15:46:16 来源:网络整理编辑:休閑
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.

The spiral galaxy Messier 96 about 35 million light-years away.Credit: NASA, ESA, and the LEGUS team"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.
The spiral galaxy Messier 66.Credit: NASA, ESA, and the LEGUS teamBut 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."
Astronomers have used the Hubble Space Telescope to look at star formation among galaxies in our own cosmic backyard.Credit: NASA, ESA, and D. Calzetti (University of Massachusetts)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."
Daughter gives her 1002026-05-23 15:02
How to watch the USC vs. Cal football without cable: kickoff time, streaming deals, and more2026-05-23 14:39
Meta's AI messages on Instagram don't seem to be encrypted2026-05-23 14:35
Prime exclusive: Save 61% on a Blink Outdoor 4 camera bundle2026-05-23 14:31
One of the most controversial power struggles in media comes to a close2026-05-23 14:22
How to watch LSU vs. Army football without cable: kickoff time, streaming deals, and more2026-05-23 14:18
'Dream Scenario' review: Nicolas Cage takes wild swings at cancel culture2026-05-23 13:46
Gift idea for teens: Save 31% on the Canon Ivy 2 Mini Photo Printer at Amazon2026-05-23 13:33
Ivanka Trump's unpaid interns share cringeworthy financial advice2026-05-23 13:26
Early Cyber Monday 2023 laptop deals at Walmart: Save up to $5512026-05-23 13:12
Over 82,000 evacuate as Blue Cut fire rapidly spreads in southern California2026-05-23 15:41
How to watch Missouri vs. Kentucky football without cable: kickoff time, streaming deals, and more2026-05-23 15:12
Is 'When Evil Lurks' streaming? Where to watch the horrifying possession film at home.2026-05-23 14:45
Black Friday Fitbit deals: Save on Sense 2 and more2026-05-23 14:27
Fiji wins first2026-05-23 14:27
NASA's Mars helicopter beamed back truly sci2026-05-23 14:06
Best Echo deal: Get an Echo Pop and a Kasa smart color bulb for under $182026-05-23 14:02
NASA's Mars helicopter beamed back truly sci2026-05-23 13:50
Olympics official on Rio's green diving pool: 'Chemistry is not an exact science'2026-05-23 13:34
Black Friday drone deals 2023: DJI, Holy Stone, more2026-05-23 13:20