The reality series When We Left Earth The NASA Missions is coming to an end on the Discovery Channel. The series kicked off on Sunday, June 8, and the finale airs on Sunday, June 22. The finale consists of two one-hour episodes aired back-to-back.
The Discovery Channel is taking a look at fifty years of NASA space exploration. In a new series called When We Left Earth: The NASA Missions, Discovery Channel will show original NASA mission footage. The footage has been transferred into High Definition for the first time ever.