... Saturn V: NASA's Largest Rocket . ... The Saturn V rocket was the largest rocket ever used by NASA, and the only one able to lift the large masses needed to land astronauts on the moon and returning them safely. ... Cen A is marked by dramatic dust lanes that run across the galaxy's center. ... Two Tails of Comet West . ... Ferdinand Magellan was a world explorer. ... A Radar Image of Planet Earth . ... This image of Mt. ... However, using an imaging radar technique, the Magellan spacecraft.. ...