The fifth planet from the sun ... In 1979, NASA's Voyager 1 and 2 spacecraft zipped by the gas giant, taking tens of thousands of pictures as they passed by. Among the surprises from these ...

The Viking 1 and 2 landers were the first human-made objects to make it to the Red Planet's surface and survive for more than a few minutes, when they touched down in 1976, according to The ...