NASA astronaut Wiseman peers out of one of the Orion spacecraft’s main cabin windows, looking back at Earth, as the crew travels toward the moon on April 2. (NASA/Handout via Reuters)

NASA astronaut Wiseman peers out of one of the Orion spacecraft’s main cabin windows, looking back at Earth, as the crew travels toward the moon on April 2. (NASA/Handout via Reuters)

by Grahamthicke