During a "meteor shower" bits of rocky material that enter our atmosphere from space burn up because of friction.
Why do airplanes sometimes leave long white contrails behind?
People have been predicting weather since long before we had Doppler radar, and many of these prediction strategies have survived as popular folk sayings.
If you ever visit the Arctic, you might see some really cool, luminescent clouds high up in the atmosphere. Scientists call them night shining clouds.
Interested in a stock tip? Invest in companies that make sunscreen. Why? Because atmospheric aerosol levels are decreasing.
How does such a tiny organism do so much to help reduce global warming?
According to a climate simulation by researchers at the University of Wisconsin, a snowless world would be both warmer and colder. Here's why.
You’re out on a clear, starry night with your best friend, looking for shooting stars. Look, there’s one, your friend shouts, but by the time you look, it’s gone. There’s another, she cries. Too late, you missed it. Then one comes along that seems to just amble across the sky, nice and slow. Why is it that some shooting stars are so fast and others are much slower? Learn more on this Moment of Science.
Why does earth only have one moon, while other planets have many? Jupiter alone has nearly 40 moons! Learn more on this Moment of Science.