Learn how Roemer learned that light does take time to travel.
Ultrasound uses high frequency sound waves to create pictures of what is going on in our body.
If you're eating toast, and you accidentally bump it to the floor, it seems more likely to land buttered side down.
How do you know the sun didn't just explode? We aren't talking about the everyday, run-of-the-mill controlled explosion the sun is always doing, but a big boom.
Remember those inflatable clowns that stood about three feet high and had big red noses, meant for punching? Hit the clown as hard as you could, right back up.
Sing, muse, of Iamblichus, chronicler of Pythagoras!
No matter HOW fast the "fast" ball is moving, it will still fall at the same speed as the ball that just meanders over the edge.
Do you remember seeing some blank squares at the end of the periodic table of elements? Those blanks were for elements we knew existed, but hadn't yet observed.
While science still has a long ways to go, new research gives us hope that we may be able to make a real lightsaber someday.
Shadowcat must use magic to walk through walls. She's definitely not using physics!