Space junk

Two of the pieces were found by local farmers in New South Wales, Australia, last month.
What's 5 mm wide, travels at 17,500 mph, and punched through a robotic arm? We don't know, but it hit the space station.
The rare and incredible sight lit up the night sky.
The object does not pose a threat, but "the show will still be spectacular."
An average of one cataloged piece of space junk falls back to Earth each day.
The video game-inspired spacecraft could catch space debris with one big chomp.