Why is the earth round? Why isn't it a cube or a pyramid?
Here's an odd thing about weightlessness: if it were possible to live in the center of the earth we would be weightless there, too!
In the contest of pet superiority - dogs versus cats - who knew that drinking method was even a topic?
Try balancing a baseball bat on your hand. With some experimenting, you'll find that the bat stays up longer if you put the heavy end up. Why?
How tiny stones inside our heads tell us which way is up...
Learn about gravity, stars, and really big lumps on this Moment of Science.
Why don't the cornflakes at the bottom of the box get crushed by the weight of the flakes on top?
Why are the planets where they are instead of somewhere else?
Nowadays everybody knows there are nine planets in our solar system, but that information was hard won.