|MadSci Network: Astronomy|
I am an informal educator at a science museum. Recently, while explaining echolocation to a student, I somehow got into how scientists have used the same basic idea about judging distances to objects that are hard to measure by bouncing signals off of the objects and measuring how long they takes to return. I dimly recollected that astronauts had placed a mirror on the moon to reflect radio signals so slight fluctuations in the Earth-Moon distance could be monitored. Of course, the kids got all excited and wanted to know more, but I can't remember much more about it (so I just veered the conversation smoothly back to echolocation:)). Now I'm curious. I looked through our library, but none of the books mention it at all, let alone details like how big it was, was it really a mirror or more of a reflecting dish, who put it there and are we still using it. Can you help me out? Thanks fo
Re: Is there a mirror on the moon and which mission put it there?
Try the links in the MadSci Library for more information on Astronomy.