Ever felt like you're always losing things into a black hole? Find out what a black hole really is on this Moment of Science.
What's the biggest magnet ever? Find out on this Moment of Science.
What is the autokinetic effect and how can you use it to fool your friends?
The theory behind this legend goes like this: Daytime is bright, due to the sun. If you view a sunless piece of sky through a long tunnel, there should be no way for the sunlight to get into your eyes. Therefore, you should see stars.