What’s it like to be the most isolated human in all eternity? Our space correspondent meets Al Worden, command module pilot of Apollo 15, who holds that dubious honour.Seven men in the history of humanity stand apart from the rest of us. These are the Apollo command module pilots who spent time alone in orbit around the Moon, while their colleagues walked on the lunar surface. When they were on the far side of the Moon, these astronauts were completely out of contact, and further from Earth, than anyone had ever been before. Or has ever been since.