Let's face it, most of us geeks love space. The iPad itself was, in part, inspired by science fiction such as Star Trek. NASA has a strong tradition of sharing its space exploration advances and research and they've continued that tradition in multi-touch style with an excellent iPad app that lets you explore photography from satellites, see NASA's launch schedules, research historical information about missions, and watch NASA TV live.
If you'd prefer to view this as a list instead of a photo gallery, then see the companion blog post.
Credit: Jason Hiner | TechRepublic