Galaxies and dark matter go together like peanut butter and jelly. Rarely is one without the other, but a recently discovered galaxy called NGC 1052-DF2 is nearly entirely lacking in dark matter. In November 2019, researchers were astonished when they viewed its image captured by the Hubble Space Te […]
美国宇航局/欧空局哈勃太空望远镜的最新结果表明，早期宇宙中第一批恒星和星系的形成比之前认为的要早。欧洲天文学家还没有发现第一代恒星的证据，也就是所谓的星族Ⅲ，那时宇宙只有5亿年的历史。 探索最早的星系仍然是现代天文学的重大挑战。我们不知道宇宙中最初的恒星和星系是何时或如何形成的。这些问题可以通过哈勃太空望远镜的深度成像观测来解决。哈勃望远镜可以让天文学家将宇宙回溯到大爆炸5亿年内。 美国宇航局/欧空局哈勃太空望远镜的最新结果表明，早期宇宙中第一批恒星和星系的形成比之前认为的要早。欧洲天文学家小组没有发现第一代恒星的证据，也就是第三代恒星，那时宇宙还不到10亿年。这个艺术家的印象呈现了早期的宇宙
Dark matter, although invisible, makes up most of the universe’s mass and creates its underlying structure. Dark matter’s gravity drives normal matter (gas and dust) to collect and build up into stars and galaxies. Although astronomers cannot see dark matter, they can detect its influence by observi
