Stratus clouds (thanks to NASA) What are stratus clouds? If you see stratus clouds, that's the time to get inside and stay there. Stratus clouds mean rain if it is warm and snow if it [...]
A bolt of lightning in the sky Hot air and cold air are constantly moving around the Earth, as the hot air rises and the cold air sinks - that's what [...]
See the steam coming out of this kettle? You can make your own clouds and see how they work. Just take a tea kettle and fill it full of water and put it on [...]
These are cumulus clouds. They are puffy. What is a cumulus cloud? Cumulus clouds are clouds that are piled up on top of each other. "Cumulus" means a pile in Latin, as in [...]
Clouds in the sky. What are clouds? Clouds are made of water What are clouds? Clouds are made of drops of water or ice. When the wind picks up water from the ocean or from [...]
Saturn, as seen from space After Jupiter, Saturn is the next farthest planet out from our Sun. In some ways, Saturn is a lot like Jupiter - it's very cold, and it's mostly made [...]
Neptune from space Neptune is the farthest planet from our Sun. Neptune is the only planet that is so far away that you can't see it without a telescope. Neptune (NEPP-toon) is [...]
Lyrid meteor shower What is a meteor? Meteors or meteorites are bits of rock (like granite) and ice - usually a mixture of rock and iron and nickel but sometimes just rock or [...]
A comet in the night sky What are comets made of? Comets are balls of leftover rock and ice in space. They started out when a star exploded into a supernova. What is a supernova? More about [...]
Salt water and ice: A salt truck spreading salt on the road Why do people put salt on the roads? You can easily see that salty water freezes at a [...]
