1. © Brent Coley 2009 | www.mrcoley.com

2. Earth One year = approx. 365 days One year = approx. 365 days One day = approx. 24 hours One day = approx. 24 hours Earth is the only planet not named for a Roman or Greek god. Earth is the only planet not named for a Roman or Greek god. It is sometimes called the Blue Planet. It is sometimes called the Blue Planet.

3. Earth It has one natural satellite, the moon. It has one natural satellite, the moon. Earth is the only planet with liquid water. Earth is the only planet with liquid water. It is the only planet known to sustain life. It is the only planet known to sustain life.

4. Pictures of Earth

9. Public domain images courtesy of NASA.