Armstrong, Collins and Aldrin pose in front of their Saturn V rocket on May 20, 1969. Neil Armstrong, front, waves as the crew heads to the van that will take them to the rocket for launch at the ...

The Huygens landing was part of the Cassini mission, which launched on Oct. 15, 1997. In 2017, after 20 years of thrilling exploration, the spacecraft made its final approach to Saturn ...