1. Celestial Objects Solar System Objects Galactic Objects
Sun, Moon, Planets and Their Moons
Galactic Objects
Star Formation Regions
Open Clusters
Globular Clusters
Planetary Nebulae
Supernova Remnants
Extra-galactic Objects
Galaxies

2. Celestial Objects http://www.seds.org/messier/Messier.html
Solar System Information
The brightest examples of Celestial Splendors

3. Earth’s Moon Complete set of phases over 29.5 days
(27.3 day orbital period)

4. Planets Planos = Wanderer among the fixed stars
Bright disk (non stellar) in small telescopes

5. Milky Way Galaxy The Milky Way center in the direction of Sagittarius
A comet, nature’s own
cosmic dirty snowball.

6. Open Cluster Thousands of stars, sometimes gravitationally bound
Contain the youngest, hottest galactic stars
Associated with star formation regions in the galaxy.

7. Globular Cluster
Hundreds of thousands of stars, gravitationally bound and spherically symmetric.
Contain the oldest galactic stars
Symmetrically distributed
about the galaxy.

8. Star Formation Regions
Giant clouds of gas and dust
(mostly Hydrogen and Helium)

9. Planetary Nebula Hydrogen rich atmosphere from a dying solar-type star
Central core of nebula (white-dwarf)

10. Supernova Remnant
Stellar Explosion Leftovers
Star Guts

11. Spiral Galaxies Millions upon millions of stars
Star forming regions abound
Globular clusters identified

12. Elliptical Galaxies Millions upon millions of stars
Resemble Globular Clusters
only on a Galactic scale.
No spiral structure, very little star formation