There's 400,000 Pounds of Trash on The Moon

http://www.thetakeaway.org/story/trash-moon-and-why-its-there/

What do the following items have in common?

   5 American flags
   12 pairs of boots
   96 bags of urine, feces, and vomit
   A photograph of Apollo 16 astronaut Charles Duke's family

If you guessed that these are all among the items on the moon, then you are correct.

In total, the moon hosts more than 400,000 pounds of man-made material, and we earthlings consistently add to that pile. Humans crash probes into the moon—a routine method for bringing unmanned missions to a close. And these crashes often leave behind a lot of trash.

But is this trash a problem, or just the cost of doing space travel?

Weighing in is Jerry Linenger, a former NASA astronaut. He was the sole American on board the Russian space station Mir, which survived the worst fire in space exploration history. He's also the author of “Off The Planet.”