Some clouds appear light and fluffy. Others dark and menacing. But are all clouds made of bacteria?
Why do airplanes sometimes leave long white contrails behind?
Steam is water that's heated to two hundred twelve degrees Fahrenheit. Believe it or not, steam is invisible--you can see right through it!
"When the dew is on the grass, rain will never come to pass; When grass is dry at morning light, look for rain before the night." Is this true?
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.
If you look at the sky on a cloudy day, you will find more clouds near the horizon than directly overhead. Why? Learn more on this Moment of Science.
Do ice and lightning mix? Find out how a lightning bolt forms and how ice plays a role.
Unlike Saturn, which has actual, physical rings, the ring you can sometimes see around the moon is merely an optical illusion.
Can you see the man in the moon? Learn about pareidolia on this Moment of Science.