Why the comet looks big
From the perspective of the people on earth, the sun is really an incredibly large celestial body, its size is as big as 1.3 million …
Tag: comet
How important is Jupiter: blocking the comet attack on the earth, the power of more than 2 billion atomic bombs?
What happens after the Earth is hit by a large asteroid? 65 million years ago, dinosaurs answered this question with their own extinction, but what …