GCKids

EARTH
Third Planet from the Sun
DISTANCE FROM THE SUN: 91 million miles
LENGTH OF ONE ROTATION (day): 24 hours
ORBITAL PERIOD (year): 365 days
COMPOSITION: Iron core and molten rocky mantle
MOONS: 1 - Luna
FUN FACT: The Earth is estimated to be 4.5 billion years old. We travel through space at 660,000 miles per hour. Earth is not round. It's an oblate spheroid, flattened at the poles and bulging at the equator. Earth is the densest planet in the Solar System.

Learn about the planet we call home! We call Earth the Blue Planet since it looks that way from space. Water covers over two-thirds of the planet surface! Earth looks very fragile when viewed from a spaceship. We have to maintain a very delicate balance to keep Earth healthy. That means we have to be careful about how much energy we use, how much trash we create and what kind of poisons industry emits into our air. We must take good care of Earth so your children and grandchildren can enjoy the trees and ocean like we do now. Here's how you can help:

The U.S. Department of Energy wants you to learn all about energy and how to save it.

The climate on Earth is changing. Learn how it has changed since the time it was once covered in ice.

Would you like to know how you can belong to the Environmental Kid's Club?