Alan Shepard explosion caused the moon landing to be aborted and nearly resulted in the loss of the crew. It became a joke between Shepard and Lovell, who would offer to give Shepard back the mission each time they bumped into each other. The failure of Apollo 13 delayed Apollo 14 until 1971 so that modifications could be made to the spacecraft. The target of the Apollo 14 mission was switched to the Fra Mauro formation, the intended destination of Apollo 13. Shepard made his second space flight as Commander of Apollo 14 from January 31 to February 9, 1971. It was
Lander (spacecraft) Surveyor. The U.S. manned Apollo Lunar Modules (since 1969) with rovers (since 1971) and Soviet unmanned late big landers (since 1969), Lunokhods (since 1970) and sample return missions (since 1970) used a rocket descent engine for a soft landing of astronauts and lunar rovers on the Moon. The Altair spacecraft, previously known as the "Lunar Surface Access Module" or "LSAM", was the planned lander for the Constellation program, prior to the cancellation of Project Constellation. Russia has plans for Luna-Grunt mission to return samples from the Moon by 2021. The Chinese Chang'e 3 mission and its Jade Rabbit rover landed