In December 1968, the crew of Apollo 8 became the first humans to leave Earth orbit and head for the Moon. They also became the first to look back at their home planet and see the entire world in one glimpse. The view they shared had an everlasting impact. In the decades since humans have looked back at their home planet from the vantage point of space, astronauts have taken stunning photographs providing a new perspective of Earth and its place in the universe.