Despite a gummed up drill bit and three days of very un-Martian precipitation, engineers pronounced the test a success--and learned to expect the unexpected, whether it be in the California outback or on Mars
Mars, Europa, interstellar nebulae, and now even the moon all seem to be getting wetter with every observation. But what is it about this simple hydrogen-oxygen combo that makes it the sine qua non of finding extraterrestrial life?
The twin Voyagers set the pace for planetary exploration. And although the technology on new probes far surpasses theirs, no other spacecraft has yet explored more of the solar system and its interstellar environs