What do astronauts on the International Space Station see when they look out the window?

(Photo Credit: Reid Wiseman/NASA)

If you have ever wondered, then Russian cosmonaut Oleg Artemyev  and NASA astronaut, Reid Wiseman, have provided the public with the best idea yet.

Lunar rocks from Apollo missions shed fresh light on the birth of the moon

(Photo Credit: NASA)

Analysis of lunar rocks brought back to Earth by the Apollo 11, 12 and 16 missions have revealed small but distinctive chemical signatures within which suggest that the moon was formed when a Mars-sized planet violently slammed into Earth over 4.5 billion years ago.

Images of the Day: 6/6/14

(Photo Credit: Reid Wiseman/NASA)

Here are more amazing pictures from the Expedition 40 crew on board the International Space Station. However these pictures are not of the Earth during darkness, but the space station itself.