Discover how the Earth started spinning, the impact of the Theia collision, and how the Moon's gravity is gradually slowing ...

Like you, I'm given to wondering about "what ifs" to better understand the assumptions we make about the world. One of my favorites is what if the Earth stopped rotating? Let's just say things would ...

When humanity first started studying motion, circles posed a peculiar puzzle. Why do planets sweep endlessly around the Sun without flying off into the void of space? Why does a stone swung on a ...

The universe seems to be spinning, and that could explain what dark energy is and why it's weakening while revealing our ...