In 1978, NASA scientist Donald Kessler realized we might have a big problem. By the late '70s, tons of satellites were being launched into orbit. From military surveillance to commercial communication to scientific research, every industry was in the satellite game. Add to that, Earth's low orbit

No human has ever walked on the dark side of the moon.  It's been over 50 years since anyone has set foot on the moon at all. The last crewed moon landing by any nation was Apollo 17, in 1972. And all six missions that landed humans on