时间:2025-11-22 10:58:53 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."
Honda's all2025-11-22 10:44
短視頻為電影宣發賦能,抖音花式“玩法”助力春節檔電影票房大賣2025-11-22 10:41
AngelEyes次拋卸妝油打破行業想象,上市3天即售罄 !2025-11-22 10:23
救命,寧靜能放棄她的可怕審美麽 ?2025-11-22 09:56
How Hyperloop One went off the rails2025-11-22 09:45
專業造型“抖”起來,《抖音巨星化妝間》攜明星造型師打造彩妝知識陣地2025-11-22 09:31
桂林融創國際旅遊度假區開業倒計時100天誓師大會隆重舉行2025-11-22 09:12
《敗金財神》今日騰訊視頻全網獨播 ,財神下凡爆笑敗金2025-11-22 09:04
Sound the alarms: Simone Biles finally met Zac Efron2025-11-22 08:51
敖瑞鵬《戀愛吧 ,食夢君》開播 暖男總裁治愈來襲2025-11-22 08:43
This weird squid looks like it has googly eyes, guys2025-11-22 10:43
靠耽改劇飛升的演員們,都怎麽續命?2025-11-22 10:26
差點被渣男毀了,她們怎麽還敢談戀愛?2025-11-22 10:23
你見過在過山車上塗口紅的神奇操作嗎?這檔節目真是活久見2025-11-22 09:41
Give your kitchen sponge a rest on this adorable bed2025-11-22 09:27
鍾鎮濤周深雙11晚會 disco老舅和新晉唱跳歌手約尬舞2025-11-22 08:57
他這是鄭爽“上身”了?2025-11-22 08:48
短視頻為電影宣發賦能,抖音花式“玩法”助力春節檔電影票房大賣2025-11-22 08:35
Donald Trump's tangled web of Russian influence2025-11-22 08:25
有“頑”沒完 2021 G2025-11-22 08:14