Space Stuff  Directory

        A SOLAR SYSTEM and a GALAXY are not the same thing!

Scale Earth
Scale Solar System
Fuzzy Stuff in Space
Finding things in the night sky
How to choose a telescope
Mars Mission, Propulsion & Space Info Links

A solar system is a sun (star) and the planets, comets and asteroids in orbit around it.

A galaxy is a grouping of billions of stars. Many, if not most of these, have their own solar systems.

The universe is an expanding "envelope" of space-time that contains billions of individual galaxies.
 

Our galaxy is about 100,000,000 times the diameter of our solar system.
 

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