时间:2026-02-21 11:24:34 来源:网络整理编辑:焦點
Fitting that this juicy piece of eye candy from the Hubble Space Telescope captured a starburst, a b
Fitting that this juicy piece of eye candy from the Hubble Space Telescope captured a starburst, a brief and intense star-forming period for a galaxy.
Say hello to NGC 1705, a dwarf galaxy about 17 million light-years from Earth in the southern constellation Pictor, the "painter's easel." NGC has produced many young stars outside the galaxy's core, as well as the central giant star cluster.
It is petite, oddly shaped, and has recently spawned a bounty of stars. NASA and the European Space Agency released the snapshot last week.
This galaxy has been churning out new stars its entire life, but it kicked into high gear as recently as 26 to 31 million years ago. That's not long relative to the estimated age of the universe, nearing 14 billion years. During starbursts, the stellar birth rate can be tens to hundreds of times greater than in typical spiral galaxies.
SEE ALSO:Want to see a brilliant star nursery and vivid planets? Look up in February.Astronomers like to study dwarf irregular galaxies because they can give valuable insight into the early history of the universe: They tend to have little more than hydrogen or helium in the way of elements and are thought to be similar to the oldest galaxies ever formed.
The new Hubble Space Telescope image of dwarf galaxy NGC 1705, top, provides more depth and detail of the starburst than the observatory's previous camera, used to take the 1999 photo, bottom. Credit: Top: ESA/Hubble & NASA, R. Chandar; bottom: NASA, ESA, and The Hubble Heritage Team (STScI/AURA);SEE ALSO:Is the mysterious 'space diamond' for real? An investigation.Scientists last photographed this galaxy in 1999 using Hubble’s former camera, the Wide Field Planetary Camera 2. Astronauts replaced it with the Wide Field Camera 3 in 2009. The newer camera was used to take the latest picture, revealing a lot more detail.
Starburst galaxies are considered to be among the most luminous infrared objects in the universe. Astronomers wanted to revisit NGC 1705 to study a specific wavelength of light, wherein they'd find thousands of nebulae, aka star nurseries. The star-making regions are created when hot, young stars bathe their surrounding gas clouds in ultraviolet light, causing them to glow.
TopicsInnovations
Felix the cat just raised £5000 for charity because she's the hero we all need2026-02-21 11:06
男士健身房減脂計劃表2026-02-21 10:53
36周早產兒成活率多少2026-02-21 10:20
懷孕7個月早產的症狀2026-02-21 10:19
Felix the cat just raised £5000 for charity because she's the hero we all need2026-02-21 10:11
梅西離隊是巴薩高層的計劃 ?有知情人透露:不續約他是競技原因!(巴薩不與梅西續約新聞)2026-02-21 10:11
寶寶吸氣時喉嚨有聲音2026-02-21 09:52
梅西離隊是巴薩高層的計劃 ?有知情人透露:不續約他是競技原因 !(巴薩不與梅西續約新聞)2026-02-21 09:49
Here's George Takei chilling in zero gravity for the 'Star Trek' anniversary2026-02-21 08:54
青椒土豆絲的專業做法2026-02-21 08:48
This coloring book is here for all your relationship goals2026-02-21 10:48
後背長硬塊般的痘很疼2026-02-21 10:31
人流7天後褐色分泌物2026-02-21 10:30
微波爐加熱牛奶幾分鍾2026-02-21 10:27
Two states took big steps this week to get rid of the tampon tax2026-02-21 09:36
牛奶能用微波爐加熱嗎2026-02-21 09:30
頸脈血管堵塞吃什麽好2026-02-21 09:14
生完寶寶盆骨寬怎麽辦2026-02-21 09:11
U.S. government issues warning on McDonald's recalled wearable devices2026-02-21 09:06
牙齒裂開一條縫怎麽辦2026-02-21 08:48