US President Nixon signs a bill for NASA to begin research on a manned space shuttle. This would lead to many successful space shuttle missions lasting for 30 years.
Pioneer 10 became the first object to be sent on a journey out of our solar system.
It carried a recording of earth sounds in case it was ever found by aliens, and is still going sending signals now, many years later!
In it's long journey it has taken some amazing photos of the planets as never seen before.
The year before:
Pioneer 10 has now left our solar system and even though it has been travelling for over 40 years it has never slowed down because there is nothing to get in its way in space!