Rotating Question Curious About Astronomy? Ask an Astronomer

Is the Moon hollow?

I once heard that the moon was hollow, I would like to know if this is true and why?

The Moon is not hollow. It is possible to tell this because when we have had things in orbit around the Moon, how they orbit in the Moon's gravity tells us about the mass of the Moon. We also know the size of the Moon so we can work out the density and see that it is not possible for the Moon to be hollow.

December 2001, Karen Masters (more by Karen Masters) (Like this Answer)

Still Curious?

Get More 'Curious?' with Our New PODCAST:

Related questions:

More questions about The Moon: Previous | Next

How to ask a question:

If you have a follow-up question concerning the above subject, submit it here. If you have a question about another area of astronomy, find the topic you're interested in from the archive on our site menu, or go here for help.

Table 'curious.Referrers' doesn't existTable 'curious.Referrers' doesn't exist

This page has been accessed 41859 times since May 15, 2002.
Last modified: October 18, 2005 5:58:12 PM

Legal questions? See our copyright, disclaimer and privacy policy.
Ask an Astronomer is hosted by the Astronomy Department at Cornell University and is produced with PHP and MySQL.

Warning: Your browser is misbehaving! This page might look ugly. (Details)