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Articles on Infinity

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The number zero was a relatively recent and crucial addition − it allows numbers to extend in both directions forever. pixel_dreams/iStock via Getty Images Plus

From thousands to millions to billions to trillions to quadrillions and beyond: Do numbers ever end?

Here’s a game: Tell a friend to give you any number and you’ll return one that’s bigger. Just add ‘1’ to whatever number they come up with and you’re sure to win.
It can stretch your mind to ponder what’s really out there. Stijn Dijkstra/EyeEm via Getty Images

Does outer space end – or go on forever?

Astronomers know a lot about what’s in outer space – and think it’s possible it never ends.

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