搜索结果: 1-15 共查到“国际动态 星系与宇宙学其他学科”相关记录240条 . 查询时间(3.607 秒)
Black holes make for a great space mystery. They're so massive that nothing, not even light, can escape a black hole once it gets close enough. A great mystery for scientists is that there's evidence ...
Galactic Fireworks Illuminate Monster Hydrogen Blob
Galactic Fireworks Monster Hydrogen Blob
2016/9/29
An international team of researchers using the Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes has discovered the power source illuminating a so-called Lyman-alpha Blob – a ra...
Astrophysicists from Johns Hopkins University have proposed a clever new way of shedding light on the mysterious dark matter believed to make up most of the universe. The irony is they want to try to ...
Small blue galaxy could shed new light on Big Bang,IU astronomers say
Small blue galaxy Big Bang,IU astronomers
2016/5/19
A faint blue galaxy about 30 million light-years from Earth and located in the constellation Leo Minor could shed new light on conditions at the birth of the universe.Astronomers at Indiana University...
Stellar parenting:Making new stars by 'adopting' stray cosmic gases
Stellar parenting Making new stars adopting stray cosmic gases
2016/2/22
Among the most striking objects in the universe are glittering, dense swarms of stars known as globular clusters. Astronomers had long thought globular clusters formed their millions of stars in bulk ...
New Theory Turns Back Clock on Conditions Behind Universe's Origin
Turns Back Clock Universe's Origin
2016/2/22
In a new study, scientists from The University of Texas at Dallas and their colleagues suggest a novel way for probing the beginning of space and time, potentially revealing secrets about the conditio...
宇宙早期或有短暂的“二次膨胀”(图)
宇宙早期 短暂 二次膨胀
2016/1/19
目前流行的大爆炸理论认为,宇宙早期扩张呈指数形式,称为“膨胀”,整个时空从一个极热而致密的点向外膨胀,成为一个均匀的、仍在不停扩张的大宇宙。但美国能源部布鲁克海文国家实验室等机构一些科学家认为,宇宙早期可能还有一个较为短暂的二次膨胀时期,这种假设或许能解释宇宙中现有暗物质数量过多的问题。
Extreme Turbulence Roiling 'Most Luminous Galaxy' in the Universe
Extreme Turbulence Roiling Most Luminous Galaxy the Universe
2016/1/22
The most luminous galaxy in the Universe – a so-called obscured quasar 12.4 billion light-years away – is so violently turbulent that it may eventually jettison its entire supply of star-forming gas, ...
Machine learning could solve riddles of galaxy formation
Machine learning galaxy formation
2015/12/7
A new machine-learning simulation system developed at the University of Illinois promises cosmologists an expanded suite of galaxy models – a necessary first step to developing more accurate and relev...
Mysterious Starburst Unshrouded in Nearby Galaxy
Mysterious Starburst Unshrouded Nearby Galaxy
2015/11/12
NGC 253 is the nearest spiral galaxy with a nuclear starburst. The nuclear region is so veiled by large amounts of dust associated to the star formation process that it has been unclear, until now, wh...
侏儒星系首次发现特大质量黑洞(图)
侏儒星系 黑洞 天文学
2014/9/25
天文学家日前首次发现了有力证据,表明在一个侏儒星系中竟然存在一个特大质量黑洞。这一发现表明,特大质量黑洞在周围宇宙中的数量可能是之前估计的两倍,它们中的许多都隐藏在那些看似不起眼的小型星系(被称为超小型矮星系)的中心。
超大黑洞为何严重“节食”之谜揭开
黑洞 节食 美国
2013/9/3
据物理学家组织网近日报道,美国马萨诸塞州阿姆赫斯特大学的一个国际天文学团队,通过使用美国国家航空航天局(NASA)高度灵敏的钱德拉X射线太空望远镜,解决了一个长期存在的谜团:为什么在星系中心大多数超大质量黑洞(SMBH)的吸积率非常低,即吞入很少宇宙中可用的气体,反倒“装作”自己在严重的节食。该研究成果发表在最新一期《科学》杂志上。
“好奇”号火星车发现类地岩石(图)
“好奇”号火星车 类地岩石
2012/10/15
美国航天局2012年10月11日宣布,“好奇”号火星车发现的一块被命名为“杰克”的火星石,其矿物构成不同于此前在火星上发现的其他岩石,而是类似地球内部产生的岩浆岩。
美科学家发现恒星在宇宙中诞生新途径(图)
美科学家 恒星 宇宙 诞生新途径
2010/12/28
2010年12月20日的美国《天体物理学杂志》(Astrophysical Journal)上刊登了一项研究成果:科学家使用哈勃空间望远镜对小麦哲伦星云(银河系的近邻)中8颗大质量恒星(20至150倍太阳质量)的观测数据表明,有五颗恒星周围没有任何大质量天体存在,另外三颗恒星则出现在非常小的星团中,组成这些星团的天体数还不到10颗。
英科学家首次发现多重宇宙存在证据(图)
英科学家 多重宇宙 证据
2010/12/20
据英国《每日邮报》2010年12月16日报道,英国天文学家日前发表论文称,他们发现了我们所在宇宙很久之前曾受到其他平行宇宙“挤压”的证据。