时间:2026-05-23 15:52:09 来源:网络整理编辑:時尚
Even to the naked eye, the Milky Way is a stunning thing. That makes a high-resolution look at the g
Even to the naked eye, the Milky Way is a stunning thing. That makes a high-resolution look at the galaxy's hydrogen clouds even more dramatic.
Scientists from Australia and Germany have produced a new, detailed survey of the Milky Way, dubbed HI4PI. It shows the presence of hydrogen gas in the galaxy, Naomi McClure-Griffiths, a professor at the Australian National University (ANU) told Mashable, as well as its neighbours, the Andromeda Galaxy and the Magellanic Clouds.
SEE ALSO:Bye, bye, Rosetta: The best moments from the spacecraft's historic missionThe map is a full sky survey of the Milky Way, in the same way the Earth is sometimes laid out as a 2D map.
"You can see the plane of the Milky Way, that's what we see as the band in the sky," McClure-Griffiths said. "What we're pulling out is all of the hydrogen gas associated with the Milky Way and the nearby galaxies."
The purple and orange colours in the map tell us how much gas is present.
"Each frame tells us how fast that gas is moving with respect to us [on Earth]," she added. "When the colours are brightest, that's where there's a lot of gas. When you can see the whole screen filled with bright colours, that's the [gas] that's closest to us."
According to McClure-Griffiths, the map took a "terrifyingly long time" to create. Researchers began collecting data in 2006. It then took five years to combine two data sets from Australia's CSIRO Parkes dish and the Max-Planck telescope in Germany.
Advances in camera technology also made such a detailed survey possible. Both telescopes used to have what she called "essentially a one-pixel camera," but new multi-pixel cameras made the process far speedier.
"That meant that instead of it taking 26 years to do the Australian survey, it took two years," she said.
HI4PI could be used as a starting point to map the Milky Way in ever new levels of detail. McClure-Griffiths compared it to a "finding chart" that early explorers used as they set out to carefully trace the coasts of countries like Australia for the first time.
Publishing their findings in the Astronomy and Astrophysicsjournal, the team hopes the map will also help us understand how the Milky Way's structures are formed.
That includes how galaxies such as the Milky Way get fresh gas to continue forming stars. "They're kind of like people -- they need to be fed all the time," she explained.
"By having this level of detail, we can look at where the gas may be coming into the Milky Way -- we're sort of searching out the food sources."
Man stumbles upon his phone background in real life2026-05-23 15:27
斯卡洛尼拿到最佳主教練獎 ,安切洛蒂應該執教一支國家隊!(阿根廷套 fifaonline4)2026-05-23 15:23
2023年印尼羽毛球大師賽2026-05-23 15:13
世界羽聯公布20232026-05-23 15:03
Uber's $100M settlement over drivers as contractors may not be enough2026-05-23 14:56
國羽兩金收官印尼大師賽 女雙混雙新秀帶來驚喜2026-05-23 14:13
【波盈足球】 中華U20女足出征亞洲盃 理事長王麟祥送機勉勵 ( 女足,花蓮 )2026-05-23 13:57
2023年3月2日《英超》:阿森納vs埃弗頓——隊伍分析和預測比分2026-05-23 13:42
One of the most controversial power struggles in media comes to a close2026-05-23 13:34
3.1 今日賽事推薦 英足總杯 伯恩利VS福利特伍德2026-05-23 13:34
One of the most controversial power struggles in media comes to a close2026-05-23 15:51
2023年馬來西來羽毛球公開賽2026-05-23 15:40
世界羽聯公布20232026-05-23 15:09
鬱悶!聯賽保持不敗,卻僅排第7,意甲名帥也帶不動這支老牌豪門2026-05-23 14:59
You will love/hate Cards Against Humanity's new fortune cookies2026-05-23 14:38
原創 3/1周三足球賽事:英超2串賽事解析,勝負、比分、總進球預測2026-05-23 14:32
【波盈足球】 王麟祥接任足協理事長 先敲定3位副祕書長 ( 理事長,足協 )2026-05-23 14:32
(體育·國際足球)“紅”“藍”爭冠格局不變——20222026-05-23 14:15
This company is hiring someone just to drink all day2026-05-23 14:10
時隔2年羽超聯賽重啟 印尼常青樹亨德拉和阿山成唯一外援2026-05-23 14:07