This colorful image of the Helix nebula may mirror what someday could become of our sun and our home planet. Released on ...

Print this free Earth Day scavenger hunt and enjoy these other fun Earth Day activities for your family. Let us know which ...

Put your love for the planet on display by flying the unofficial Earth Day flag. The flag, which features an image of Earth as viewed from space, was designed by environmental advocate John ...

and how environmental disasters of his day inspired the creation of Earth Day in 1970. On December 7, 1972, Apollo 17 astronauts captured a now-iconic image of Earth, sometimes called the “blue marble ...

Take a look at our favorite space pictures here, and if you're wondering what happened to today in space history don't miss our On This Day in Space ... and the distant Earth from the lunar ...