More on the Lunakhods and other rovers
Good article about Rovers
"Lunokhod 1 was part of the Soviet empire's last-ditch effort to take back some of the glory it lost to the immensely successful American Apollo program. Luna 15 blasted off July 13, 1969, with an ambitious mission to land an unmanned rover on the Moon and return soil samples. Luna 15 beat Apollo 11 into lunar orbit by 48 hours, operating successfully for 52 orbits, but it crashed onto the lunar surface the day after Armstrong and Collins set down on the Sea of Tranquility."
I wonder if the Apollo 11 crew knew Luna 15 was coming down?