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'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 ...
Live Science on MSN
Which planets are the youngest and oldest in our solar system?
There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?
A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...
When it comes to science, a simple observation can upend everything you think you know, such is the case with one star ...
About 620 light-years from Earth, a gigantic rogue proto-planet is currently devouring 6.6 billion tons of dust and gas per ...
ESO's Very Large Telescope has observed a rogue planet and revealed that it is eating up gas and dust from its surroundings ...
The widespread death of coral reefs is the first in a series of catastrophic and potentially irreversible tipping points the ...
The growth spurt hints that the free-floating object evolves like a star, providing clues about rogue planets’ mysterious origins.
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