Sentences with phrase «unmanned space exploration program»

But the unmanned space exploration program has done far, far more to push forward scientific knowledge than those missions that include astronauts, which mostly have been limited to earth orbit, other than a few jaunts to the moon that brought back a few rocks, so valuable to science that some have ended up as souvenirs.

Not exact matches

NASA is under fire right now for proposing cutting programs for unmanned space exploration so that they can invest in getting people to the moon and then Mars, and to maintain the space station.

While NASA's manned space program remains in crisis, its unmanned attempts at exploration, especially on Mars, keep chalking up successes.