August 27 – September 2, 2012

Our Moon is more than one-quarter the diameter of Earth. The only comparable pair in the solar system is Pluto and its moon Charon.

All comments must follow the Sky & Telescope Terms of Use and will be moderated prior to posting. Please be civil in your comments. Sky & Telescope reserves the right to use the comments we receive, in whole or in part, and to use the commenter’s username, in any medium. See also the Terms of Use and Privacy Policy.


This site uses Akismet to reduce spam. Learn how your comment data is processed.