Space

Meteor showers, moons, stars and the rocks between them all follow rules you can check for yourself. We explain what astronomers have actually measured, how they know it, and where the popular version of the story drifts away from the data.

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What If the Moon Disappeared?

What if the moon disappeared? Tides shrink to the Sun's share and nights go dark at once, while tilt and day length change over millions of years.

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