Can you make a comet?
What is in a comet? Some scientists call it a "dirty snowball in space". With adult supervision, you can make your own comet with a mixture of materials that might surprise you. The resulting lump makes a comet tail of melting gases when you hold it up to a lamp in a darkened room. See how our Science-U campers did it, then try it yourself at home with step by step instructions and guided scientific questions at Science-u.org.