NASA astronaut witnessed an eclipse from space. It was 'unnatural.'

Terry Virts peered down from the International Space Station in March 2015. The NASA astronaut saw a massive, unusual shadow cast upon Earth. "It was this big, dark thing that wasn't natural," Virts, a retired astronaut and former International Space Station commander, told Mashable. He watched a shadow created by the cosmic dance of the moon, Earth, and sun — specifically the moon traveling between our planet and the sun. It was a total solar eclipse, an event that's technically natural,