Life became a possibility in the Universe as soon as the raw ingredients were present. But living, inhabited worlds required a bit more.
When Milky Way and Andromeda Collide, Earth Could Find Itself Far From HomeJR Minkel
When you are interested in observing the Milky Way, the best instrument to use is ___. A. a sextant B. a telescope C. a chronometer D. a hygrometer 相关知识点: 试题来源: 解析 B。解析:本题考查观测银河系的最佳工具。a telescope望远镜是观测银河系的最佳选择,因为它能让我们看到银河系中的...
very dark skies, and a clear atmosphere are all necessary. But it becomes easier further into the spring as the milky way rises a little higher each night. From the start of the season until early May, the milky way will be at it’...
One of them is the earth.On a clear night away from city lights, you can see part of theMilky Way. Because many stars are close together, they looklike a milky white line across the sky. However, if you lookedat i with a telescope(望远镜), you would find it is made up of...
Although early Earth was a molten hellscape, once it cooled, life arose almost immediately. That original chain of life remains unbroken.
Scientists were amazed when they first ___ the vastness of the Milky Way. A. understood B. realized C. noticed D. recognized 相关知识点: 试题来源: 解析 C。解析:notice表示注意到,科学家们第一次注意到银河系的浩瀚时感到很惊讶。understand是理解,realize是意识到,recognize是辨认出,这里强调最初看...
When the foreigners hear about ___ tale about the Milky Way, they call it ___Chinese Valentine’s Day. A.a; the B.the; a C.the ; the D.a; / 相关知识点: 试题来源: 解析 B 考查冠词,第一空填the,特指“鹊桥的传说”,第二空填a,指“中国的情人节”,句意是:当外国人听到鹊桥的故事...
C. The supermassive black hole had existed before the Milky Way was formed. D. There is a reason why the large black holes are called “supermassive”. 5.The last two paragraph mainly focus on the question of ___. A. what a black hole is B. how black holes form C. how big black...
two billion years, our descendants may witness quite a show in the night sky. Researchers estimate that the Milky Way will collide with its nearest neighbor, the Andromeda galaxy, at around that time—well before the sun collapses into a white dwarf, perhaps destroying the Earth...