NASA
NASA
Everything you have ever wanted to know about our solar system, space exploration, and more can be found here. Be prepared to clear your schedule; you will be sucked into the app like a star into a black hole.
American Association for the Advancement of Science
Gravity Launch
Getting a ship into orbit isn't rocket science. Oh, wait...that's exactly what it is! Learn the basics of the concepts of thrust, launch angle, and gravitational pull in this fun and progressively challenging game.