Posts Tagged ‘NASA’
Worlds beyond the solar system
Once upon a time — about 20 years ago — kids in school learned about nine planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. The Nine orbited the sun, and they were the only planets that mattered. Any others existed in the imagination of [Read More]
Searching for underground water, from the sky
Keeping track of water makes for tricky science. It drains through soil, slips through cracks in rocks and refills underwater reserves. It bubbles up through springs and runs in rivers. Water evaporates and forms clouds; rain brings it back to earth, where it keeps plants [Read More]
End of an Era
I wrote about the end of the space shuttle program for Science News for Kids. Here’s the whole story. [Read More]
