Brugh Main Page

Glossary of Terms

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Select the first letter of the word from the list above to jump to appropriate section of the glossary. If the term you are looking for starts with a digit or symbol, choose the '#' link.

- O -


The position of a superior planet when it is closest to the Earth. (At this point it is 180 degrees from the Sun's position.)

The path of a celestial object around another object.

Orion Nebula

Visible with the naked eye, this nebula is located in the constellation of Orion, and is the largest complex of gas and dust known in the Milky Way.
Back to Top




Please send all e-mails to:

Created by Searles and Deborah O'Dubhain,
Copyright 1996 by The Summerlands, Inc., All rights reserved
Page last updated:
08/30/98 03:56 PM