SeymourSimon

Which planet has forty-two years of continuous daylight, followed by forty-two years of night? Newly updated edition coming Sept. 1, 2012!

Did you know that Saturn’s rings are really billions of chunks of ice, dust and rocks, swirling around the huge gas giant? Newly updated edition coming Sept. 1, 2012!

Can you imagine a planet where the difference in temperature between day and night is 1,000 degrees?

Venus may be our sister planet, but it could not be more different than our Planet Earth! Newly updated edition coming September 1, 2012!

When the Voyager 2 spacecraft whizzed past Neptune, we learned more about this mysterious planet than in all the previous years of observation from Earth. Newly updated edition coming Sept. 1, 2012!

The sun, the center of the solar system, is so large that 1,300,000 Earths could fit inside.

Why is Earth the wrong name for our planet?

What makes a comet grow a tail?

What happened when a huge comet plowed into Jupiter?

What are the latest discoveries we’ve made about Mars?

How big and how hot is our sun?

What does it take to be a space traveler?

Why did people think that aliens came from Mars?

¿Qué planeta tiene una tormenta más grande que nuestro planeta?

Which planet has a storm bigger than our whole planet Earth?

Los helicópteros más grandes pueden levantar sobre 80.000 libras.

The biggest helicopters can lift over 80,000 pounds on one flight.

Match your paper airplanes against others in a flying contest.

Why does the moon change shape in the sky?

Exploding stars, black holes, space pods and strange space sights are only some of the mysteries of the universe.

Every star you see in the night sky is a gigantic sun, and some are a lot bigger and hotter than our own sun.

How come Pluto is no longer considered a planet?

Take a trip to the outer edges of known space and beyond.