搜索结果: 1-15 共查到“国际动态 银河系结构与运动”相关记录35条 . 查询时间(2.299 秒)
![](http://www.firstlight.cn/upload/imgfile/201912/18/201912189157764.jpg)
火星地震揭示地质奥秘(图)
火星 地震 地质 揭示奥秘
2019/12/18
地震来得又快又猛。目前,在靠近火星赤道的着陆点,美国宇航局(NASA)的“洞察号”任务每天能探测到两次地震,而且地震频率还在上升。“地震真的很多。”加州帕萨迪纳喷气推进实验室地球物理学家、“洞察号”项目首席研究员Bruce Banerdt说。近日,他在加州旧金山举行的美国地球物理联合会会议上报告了这一发现。
天文学家发现一颗高速“飞奔”的脉冲星
天文学家 高速 脉冲星
2019/3/25
美国航天局2019年3月20日发布公报说,天文学家发现一颗在银河系高速“飞奔”的脉冲星,时速接近400万公里。以它的速度,从地球到月球仅需6分钟。这颗被称为J0002的脉冲星位于距地球大约6500光年的仙后座,每秒旋转8.7次。它在太空中的快速运动形成了一条长达13光年的“尾巴”,指向大约53光年外一个超新星遗迹的中心。
![](http://www.firstlight.cn/upload/imgfile/20181/31/2018131165644941.gif)
New Stellar Streams Confirm ‘Melting Pot’History of the Galaxy(图)
New Stellar Streams Melting Pot History of the Galaxy
2018/1/31
Where do the stars in our Galaxy come from? All the stars we see in the night-time sky belong to our Milky Way galaxy, and while most stars were likely born here, in the Milky Way, many appear to have...
![](http://www.firstlight.cn/upload/imgfile/201710/26/2017102692058458.jpg)
VLBA Measurement Promises Complete Picture of Milky Way(图)
VLBA Measurement Complete Picture Milky Way
2017/10/26
Astronomers using the National Science Foundation’s Very Long Baseline Array (VLBA) have directly measured the distance to a star-forming region on the opposite side of our Milky Way Galaxy from the S...
![](http://www.firstlight.cn/upload/imgfile/20179/1/20179114220410.jpg)
In a first-of-its-kind analysis, Northwestern University astrophysicists have discovered that, contrary to previously standard lore, up to half of the matter in our Milky Way galaxy may come from dist...
This week heralds an exciting and challenging endeavor for astronomy. The Event Horizon Telescope will seek to capture a first-ever image of the supermassive black hole at the center of the Milky Way,...
Milky Way-like Galaxies in Early Universe Embedded in 'Super Halos'
Milky Way-like Galaxies Early Universe Embedded Super Halos
2017/3/30
By harnessing the extreme sensitivity of the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have directly observed a pair of Milky Way-like galaxies seen when the universe was only e...
银河系全景氢气地图问世首次揭露恒星间结构细节
银河系 全景氢气地图 恒星间结构
2016/11/1
欧洲《天文与天体物理学》杂志2016年10月23日公开的一篇论文称,澳大利亚和德国科学家利用超大可操纵射电望远镜,绘制出了前所未有的详细银河系氢气地图,首次揭示了银河系恒星间的结构细节,有助于解释银河系星系形成的最终奥秘。中性原子氢是宇宙空间中最丰富的元素,并且是恒星和星系间的主要成分。此次,天体物理学家们利用位于德国埃费尔斯贝格的100米直径马克斯普朗克射电望远镜、以及位于澳大利亚帕克斯的64米...
![](http://www.firstlight.cn/upload/imgfile/20151/20/2015120104248289.jpg)
Study of Andromeda's stellar disk indicates more violent history than Milky Way(图)
Andromeda's stellar more violent history Milky Way
2015/1/20
A detailed study of the motions of different stellar populations in the disk of the Andromeda galaxy has found striking differences from our own Milky Way, suggesting a more violent history of mergers...
![](http://www.firstlight.cn/upload/imgfile/20111/21/2011121132129.jpg)
Ever since supermassive black holes were found to lurk at the heart of most large galaxies, astronomers have wondered what came first: the galaxies or the black holes themselves? Now astronomers in th...
银河系外首次发现新行星
银河系 首次 新行星
2010/11/23
据英国《每日电讯报》2010年11月18日报道,德国科学家在最新一期的《科学快讯》杂志上指出,他们在一颗起源于银河系外的恒星附近发现了一颗新行星,这意味着该行星本身来自银河系之外。这是人们首次发现起源于银河系之外的行星,这一发现可能会使我们目前对行星的形成和留存的理解提出质疑。迄今为止,科学家已经在银河系内发现了大约500颗行星,但这颗新发现的行星是首颗源于银河系外的行星,科学家将其命名为HIP ...
银河系中心发现巨大天体结构--或为超大黑洞存在的直接证据
银河系中心 天体结构 黑洞 直接证据
2010/11/11
美国国家航空航天局(NASA)2010年11月9日表示,利用绕地球轨道飞行的费米伽玛射线太空望远镜,科学家在银河系中心观察到了过去从未发现的、跨度为5万光年的天体结构,它可能是银河系中心超级黑洞喷发的残余物质。相关研究文章即将正式发表于《天体物理杂志》。
![](http://www.firstlight.cn/upload/imgfile/201012/1/201012193749.jpg)
'Best evidence yet' for dark matter comes from Milky Way centre(图)
dark matter Milky Way centre
2010/12/1
Energetic radiation pulsing from the belly of the Milky Way is the clearest signal yet of dark matter. That is according to a pair of astrophysicists in the US who reach this conclusion after scrutini...
![](http://www.firstlight.cn/upload/imgfile/20109/21/2010921152214.jpg)
An ancient star in our galaxy's halo harbours isotopes of barium that shouldn't be there – at least according to our conventional understanding of nucleosynthesis. That's the conclusion of an internat...
![](http://www.firstlight.cn/upload/imgfile/20109/21/2010921155831.jpg)
Lurking at the centre of nearly every galaxy and gobbling up stars in their vicinity, supermassive black holes are a truly menacing feature of the universe. Now, an international team of astronomers c...