NASA App (Free)

The mother lode for space geeks, this app collects, customizes and delivers an extensive selection of news, images and videos.

Keep track of the International Space Station as it orbits Earth, with tracking data culled from NASA and North American Aerospace Defense Command (NORAD).

Hold the moon in your hand with this app, which lets you swing around the surface in real-time 3D renderings.

Point your iPhone to the sky and find out what constellations and stars you’re looking at in real time.

A great guide for astronomy enthusiasts with a 3D rotating globe of the planets and moon, and 2D and 3D maps of the sky above.

Get an up-to-the-minute portrait of our sun’s ever-changing surface with help from NASA’s Solar Terrestrial Relations Observatory (STEREO) satellites orbiting millions of miles away.

This app keeps track of asteroids and comets passing close to Earth, and shows the name of the object and when it’s projected to pass us (hopefully) by.

This app created in collaboration with NASA, the European Space Agency and the UK Space Agency keeps you informed of worldwide news.

Discover stunning images and video of the universe and rate them along with your friends, with help from NASA and the Jet Propulsion Laboratory (JPL).

While the actual shuttle program may have come to an end, you can relive NASA’s high-flying glory days with this simulation app.