In an effort to engage "tech-savvy young adults", three years ago, NASA launched their own internet radio station, "Third Rock".

According to this story on space.com:

The goal is to showcase NASA's space exploration missions in a novel format for today's youth.

"NASA constantly is looking for new and innovative ways to engage the public and inspire the next generation of scientists and engineers," said David Weaver, associate administrator for the Office of Communications at NASA Headquarters in Washington. "We have led the way in innovative uses of new media and this is another example of how the agency is taking advantage of these important communication tools."

The beauty of this site is, it's all Alternative music. Basically, the geeks that hold all of our space-travel hopes in their hands, have pretty good taste in music. Check out their station here.