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 ...
Space.com on MSN
This might be the smallest clump of pure dark matter ever found
The dark object has a mass a million times greater than our sun's is located 10 billion light-years away and has no stars.
Did you miss important current affairs from the past week? Here are the must-know topics you should catch up on: National ...
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