Earthrise (1968) – William Anders, NASA

Back then, it was hard to imagine how the earth really looks from outer space, but in 1968, thanks to the astronauts who boarded the Apollo 8 and landed on the moon, we now have an idea of how small of a speck we really are. Bill Anders, Frank Borman, and Jim Lovell orbited the moon in a dangerous mission but came back with this mesmerizing snap.

The National Aeronautics and Space Administration will next aim to send the first woman to land on the moon in a 2024 mission through the Artemis program. Elon Musk-founded space exploration company, SpaceX, will also attempt to bring humans to the moon.