Lunar laser ranging



At the 1990 AGU Spring Meeting in Baltimore, Md., on Tuesday morning, May 29, there will be the special joint Geodesy-Planetology session Apollo Lunar Laser Ranging and Our Lunar Return. This session of invited papers will focus on and, yes, celebrate lunar laser ranging, which has been made possible by simple laser reflectors of the type first left by Buzz Aldrin on the powdery surface of the Sea of Tranquility. The session has been arranged to recall that on July 20 of this past year we celebrated the twentieth anniversary of the first human landing on the Moon.