Apollo 13 more immediate and visible warnings of anomalies. Because Apollo 13 followed the free-return trajectory, its altitude over the lunar far side was approximately greater than the orbital altitude on the remaining Apollo lunar missions. The Moon was almost at apogee during the mission (as it also was during the flights of Apollo 10 and Apollo 15), which also increased the distance from the Earth. The combination of the two effects ensures that Apollo 13 holds the absolute altitude record for a manned spacecraft, reaching a distance of from Earth on 7:21 pm EST, April 14, 1970. The A7L spacesuit intended
Apollo Applications Program pilot was a concern for mission planners, so proposals that it would be a three-man landing team or that the CSM would rendezvous with an orbiting module were considered. The following phases were considered: The "Apollo LM Taxi" was essentially the basic Apollo LM modified for extended lunar surface stays. This was expected to be the workhorse of both "Apollo Applications Extended Lunar Surface Missions" beginning in 1970 and to larger "Lunar Exploration System for Apollo" in the mid-to-late 1970s. The "Apollo LM Shelter" was essentially an Apollo LM with ascent stage engine and fuel tanks removed and replaced with