Live Science on MSN
'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine'
A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...
The Nature Network on MSN
The Truth About Who Named Planet Earth (Spoiler: Nobody Knows)
Everyone knows the names of the planets, but Earth feels different. It doesn’t sound powerful like Jupiter or mysterious like ...
Before becoming the only planet in our solar system teeming with life, Earth was a desolate, stony globe — dry as dust and ...
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