Learn about spacecraft that travel through space to collect science information.
Watch astronaut Sunita Williams talk to students at Wickliffe Progressive Community School.
When you look up at the night sky, you might see stars, the moon and planets. Is anything else in space? Read this book to find out.
The sun and the planets are part of the solar system.
How does a weather satellite stay in space? How does it take pictures of Earth? Find out in this storybook.
08.29.12 - Pluto used to be a planet, but today it is called a "dwarf planet."
The Curiosity rover has landed on Mars! See what the area near the rover looks like.
Follow the Curiosity rover landing on Mars.
› Interact → | › At a Glance →Athletes aren't the only ones who exercise a lot. Watch these videos to find out why staying in shape is important for astronauts, too!
Find out why Mars is called the "Red Planet."
The first American woman to fly into space flew on the space shuttle in 1983.
Did you know that Earth's moon is larger than Pluto? Find out more about Earth's natural satellite on this page just for kids.
Hoping for more birthdays, alien M51 moves Earth closer to the sun and learns an important lesson about life in the universe.
› Captioned video →What's that fuzzy white bunny on Mars?
Lasers are a special form of light.
Our solar system is made up of a star, eight planets, moons, comets, asteroids, space rocks, ice and several dwarf planets.
This interactive storybook tells which planet, or dwarf planet, is the best in the solar system.
› Flash → | › Printable →Planet Earth is called the "Goldilocks planet." Find out why it is just right for us!
On June 5, 2012, Venus will pass directly between Earth and the sun. Learn more about Earth's neighbor.
Sometimes the planet Earth is called the "Big Blue Marble."