Do ailens exist?
It's possible. The Drake Equation estimates there are 100,000-1,000,000 extraterrestrial civilization in the Milky Way Galaxy. But there has never been any proof of other beings living in any galaxy.
Answered by Allicia B. -
About Galaxy
A galaxy is a group of billions and billions of stars clumped together by gravity. If our planet was a house, the solar system our town, our galaxy the Milky Way, would be our country.
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