Friday, September 25, 2015

Can an astronaut standing on the moon observe earth's rotation with the naked eye?

Yes, as long as one was patient.  If one was on the Moon and stared up at the Earth and Washington DC was in the center of their view, in about thirty minutes, Lexington, Kentucky will have taken its place and in less than an hour Chicago, Illinois will have taken its place.  Add another thirty minutes and he or she would be looking at Topeka, Kansas.

No comments:

Post a Comment

Mathematics: What is the most beautiful theorem proof, and why?

I am sure that there are some out there that would say that this does not constitute a proof, but I have always found this to be a beautifu...