2018年，一个国际研究团队使用美国航空航天局（NASA）/欧洲空间局（ESA）的哈勃空间望远镜（Hubble Space Telescope）和其他几个天文台的数据，首次发现了一个缺失大部分暗物质的星系。这个星系位于银河系的邻居鲸鱼座（Cetus）之中，名为NGC1052-DF2，距离我们4500万光年。 NGC 1052-DF2星系的这一奇怪发现，令天文学家倍感意外，因为依据现有的理解，暗物质是当前星系形成和演化模型中的关键组成部分。实际上，如果没有暗物质的存在，原初气团将缺乏足够的引力来开始它的塌陷过程，也就无法并形成新的星系。 在此一年之后，研究人员又发现了另一个缺失暗物质的星系，NG […]
Lying inside our home galaxy, the Milky Way, this Herbig–Haro object is a turbulent birthing ground for new stars in a region known as the Orion B molecular cloud complex, located 1,350 light-years away. Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars that for
我们天空中一些最令人惊叹的景象出现在日落时分，阳光穿透云层，形成了由云层的阴影和大气散射的光束形成的明暗混合光线。 研究邻近星系IC 5063的天文学家们被美国宇航局哈勃太空望远镜拍摄的图像所吸引。在这种情况下，从活跃星系耀眼的中心可以看到一束狭窄的明亮光线和阴影。 这张哈勃太空望远镜拍摄的附近活动星系IC 5063的中心图像显示，明亮的光线和来自炽热核心的阴影混合在一起，炽热核心是一个超大质量黑洞的所在地。天文学家认为，围绕黑洞的一圈尘埃物质可能正在将黑洞的阴影投射到太空中。根据他们的设想，这种光和影的相互作用可能会发生在巨黑洞爆炸的光撞击深埋在核心中的尘埃环的时候。光线穿过尘埃环上的缝隙，
Observed with the NASA/ESA Hubble Space Telescope, the faint galaxy featured in this image is known as UGC 12588. Unlike many spiral galaxies, UGC 12588 displays neither a bar of stars across its center nor the classic prominent spiral arm pattern. Instead, to a viewer, its circular, white and mostl
This NASA/ESA Hubble Space Telescope image features the galaxy LRG-3-817, also known as SDSS J090122.37+181432.3. The galaxy, its image distorted by the effects of gravitational lensing, appears as a long arc to the left of the central galaxy cluster. Gravitational lensing occurs when a large distri
The galaxy UGCA 193, seen here by the NASA/ESA Hubble Space Telescope, is a galaxy in the constellation of Sextans (the Sextant). Looking rather like a waterfall, UGCA 193 appears to host many young stars, especially in the lower portion of this view, creating a striking blue haze and the sense that
如果没有恒星，宇宙将是一个非常无聊的地方。如果没有它们，宇宙将仍然是一个来自大爆炸的氢和氦的弥散等离子体。 作为宇宙的基本组成部分，恒星核聚变炉锻造出新的重元素，丰富它们的母体星系。来自恒星的辐射能可能在最适宜的行星上孕育生命，就像在地球上一样。 为了更好地了解恒星和恒星演化，位于马里兰州巴尔的摩的太空望远镜科学研究所(STScI)与美国宇航局的哈勃太空望远镜启动了一项雄心勃勃的新计划，名为ULLYSES(UV Legacy Library of Young star，作为基本标准的年轻恒星紫外线遗产库)。 这是大麦哲伦星云（LMC）的地面望远镜照片，该星云是我们银河系的卫星星系。该星系是美国
In this spectacular image captured by the NASA/ESA Hubble Space Telescope, the galaxy NGC 2799 (on the left) is seemingly being pulled into the center of the galaxy NGC 2798 (on the right). Interacting galaxies, such as these, are so named because of the influence they have on each other, which may
This image, taken with the NASA/ESA Hubble Space Telescope, depicts a special class of star-forming nursery known as Free-floating Evaporating Gaseous Globules, or frEGGs for short. This object is formally known as J025157.5+600606. When a massive new star starts to shine while still within the cool
