宇宙云 nebular cloud
cosmic cloud
- 说明:当望远镜扫过人马座天空时,这块美丽的宇宙云将会成为一道美丽的风景。
Explanation: This beautiful cosmic cloud is a popular stop on telescopic tours of the constellation Sagittarius. - 说明:这张绚丽的猎户座影像显示了星座内年轻恒星以及由氢气和尘埃组成的宇宙云。
Explanation: This gorgeous image of Orion shows off the constellation's young stars and cosmic clouds of hydrogen gas and dust. - 巨大的宇宙云的存在,实际上是20年代首创的大爆炸论得以保持其宇宙起源论的主导地位不可缺少的。
The existence of the giant clouds was virtually required for the Big Bang, first put forward in the 1920s, to maintain its reign as the dominant explanation of the cosmos.