Modern Engineering Marvels on MSN
Rogue planets redefining the limits of planethood
However, what constitutes a planet in particular is a question that may seem very simple but has been escalating in complexity as scientists discover new planets that defy the classical definition.
Morning Overview on MSN
Why time only moves forward, and past travel can't happen
Time feels like the most familiar thing in the world, yet it hides one of physics’ hardest questions: why do we only remember ...
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