This incredible photo was taken by astronaut William Anders during the Apollo 8 mission in 1968. It reminds us of the vastness of the universe and our place in it.

This picture of the Carina Nebula, which is thousands of light-years from Earth and contains more than 14,000 stars, comes from the Hubble Telescope.

The tenth manned mission of the Apollo program, the brave astronauts of Apollo 16 spent three days on the moon, pushing forward the boundaries of our imagination and our collective ambitition to explore our place in the universe.

The first 'space selfie' was taken by Buzz Aldrin in 1966. This picture shows a lighter side of the brave men and women who push the boundaries of what humanity is capable of.