If you can find a place away from city lights with a good view of the incredible night sky, you just might see the International Space Station sailing by.
If the residents of Kauai, Hawaii thought they saw a flying saucer Saturday, they might not be crazy. Except what they saw didn't come from outer space, though that may be its ultimate destination.
In 2014, the European Space Agency (ESA) did the incredible: it landed a probe on a comet. But this wasn't its first rodeo. Ten years ago, it parked a probe on the hazy, alien moon of Titan.