时间:2026-03-28 21:57:17 来源:网络整理编辑:知識
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."
Old lady swatting at a cat ends up in Photoshop battle2026-03-28 21:25
重慶隊球員集體討薪 :被欠薪16個月 隻能送外賣跑滴滴2026-03-28 20:57
主帥聊狼王:總有些豪門會砸錢 若他留下我很開心2026-03-28 20:55
格局!瓜帥擁抱對手即將退役功勳 沒贏球又如何?2026-03-28 20:33
Satisfy your Olympics withdrawals with Nike's latest app2026-03-28 19:59
重慶隊球員集體討薪 :被欠薪16個月 隻能送外賣跑滴滴2026-03-28 19:55
韓喬生談重慶隊罷訓討薪 :準入的門檻到底是多少?2026-03-28 19:55
石柯:大家把心思放在泰山隊比賽上 不信謠不傳謠2026-03-28 19:52
Over 82,000 evacuate as Blue Cut fire rapidly spreads in southern California2026-03-28 19:29
邵佳一:劉邵子洋學習能力強 、性格好 前途不可限量2026-03-28 19:27
'Rocket League' Championship Series Season 2 offers $250,000 prize pool2026-03-28 21:40
囧叔被問博格巴:不認識 !他是誰?英文單詞嗎?2026-03-28 21:21
曝尤文與迪馬利亞已達成協議 挖國米敲定佩裏西奇2026-03-28 21:11
曼聯名宿:C羅未進英超最佳候選是笑話 100%留隊2026-03-28 21:03
This German startup wants to be your bank (without being a bank)2026-03-28 20:32
石柯:大家把心思放在泰山隊比賽上 不信謠不傳謠2026-03-28 20:29
足協本周將官宣中超賽程 揭幕戰山東泰山VS重慶兩江競技2026-03-28 19:49
歐戰積分平皇馬追紅軍 新科歐聯冠軍:你好,歐冠2026-03-28 19:42
17 questions you can answer if you're a good communicator2026-03-28 19:37
七年與十七年的謝幕 尤文圖斯兩功勳主場告別戰2026-03-28 19:20