NASA's Unexplained Files - Season 3 Episode 5 -

Moonshot Plan B: Recently discovered documents show NASA's secret plan B for failure of the first moon landing. Missing Module: April 2008 a Soyuz capsule carrying NASA astronaut Peggy Whitson back to Earth goes missing. Bad Seed: July 2013 stratospheric sampling catches a microscope ball of titanium that seems to contain living material. Death Grip: August 2007 astronaut Richard Mastracchio is on a spacewalk to make repairs to ISS and finds a cut on his glove. The Disappearing Moon: October 1671 Giovanni Domenico Cassini discovers a moon around Saturn, only to see the moon vanished a short time later. More than 300 years later the NASA probe Cassini looks for answers. The Venus Scorpion: March 1982 the Soviet Venus probe releases a lander that appears to show a moving object.