The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've observed in the universe so far.
Life on Earth started out microscopically small, but it didn’t stay that way for long. Here are five of the biggest creatures to have ever called planet Earth home.
Space. It's really, really big. How big is it? Well, according to astronomers, the observable universe is around 92 billion light-years in diameter, but that's all we can see (hence the word ...
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