The curious minds at What If analyze what happens if 3I/ATLAS crashed into Earth, revealing orbital trajectory, impact energy ...

Hang on because we’re about to screech to a halt. That’s right. The Earth is going to stop spinning for five seconds. How much damage would this sudden stoppage cause? What would you experience in ...

Have you ever wondered what the world would be like if everyone suddenly disappeared? What would happen to all our stuff? What would happen to our houses, our schools, our neighborhoods, our cities?

An asteroid nearly the size of a football field now has roughly a 0.004% chance of hitting Earth in about eight years, NASA says — with the space agency saying it "no longer poses a significant impact ...

Suppose you could speed up Earth’s rotation so that a day was only half as long? What would happen? Well, for starters we’d have to make new clocks that only have hours 1 to 6 for am and pm. If you ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Earth's core cannot be made just of iron — it also appears to contain carbon. And our research suggests it may contain a bit of oxygen and possibly silicon as well. When you purchase through links on ...