Open Star Cluster | Globular Star Clusters | The Colors of Stars | Planetary Nebula | Emission / Reflection Nebula | Minima of ALGOL | Another Galaxy
7. Another Galaxy 50 points
There roughly as many galaxies in the universe as there are stars in our Galaxy. Some galaxies are relatively close while others are at the limit of our vision.

Galaxies may appear hazy or indistinct. Keep in mind that there are over 100 billion stars in the field of view making up that image.

Your instructor can tell you which galaxies (if any) can be observed right now.

You may be able to observe the Great Galaxy in Andromeda (M31). It is about 2.2 million light years away. It is a little bit larger than our own Milky Way Galaxy. On clear nights it is possible to see one or both of the small elliptical satellite galaxies that orbit M31. From the city you will need binoculars or a telescope to see M31.

Guiding Questions:
  • Can you see any distinct shape to the galaxy?
  • How bright is it compared to the background sky?
  • Does the galaxy have a sharp edge or do its edges fade from light to dark?