This atmospheric image taken with the NASA/ESA Hubble Space Telescope shows a dark, gloomy scene in the constellation of Gemini (the Twins). The subject of this image confused astronomers when it was first studied — rather than being classified as a single object, it was instead recorded as two obje […]
Although it looks more like an entity seen through a microscope than a telescope, this rounded object, named NGC 2022, is certainly not algae or tiny, blobby jellyfish. Instead, it is a vast orb of gas in space, cast off by an aging star. The star is visible in the orb’s center, shining throug
NASA/JPL-Caltech/D.Berry and NASA Goddard Scientific 一个行星系统中，首先需要一颗恒星，这段视频从距离我们大约6500光年的”创生之柱”讲起。 0到10万年间，一颗恒星诞生于一团冷云中，它会塌缩成一团气体，周围环绕着一个看上去像是煎饼的圆盘。 10万年到100万年间，处于婴儿期的恒星会吞噬周围的气体和尘埃，此时新生恒星的亮度和增强，并在两极喷射喷流。 1百万到1千万年间，婴儿行星诞生于环绕恒星的尘埃聚集，并在与其他小天体的碰撞中变得更大。 1千万年到10亿年间，少年期的行星，它们会四处移动，相互作用，将较小的天体踢向其他行星，或恒
