CLST 2090 Chapter : Astronomy Study Guide
Document Summary
The moon"s diameter is about the size of the continental us. You can fit all the planets between the earth and the moon. Light year: light travels 300,000 kilometers per second or 9. 5 trillion km per year. The 88 official constellations cover the celestial sphere. Celestial sphere: projection of earths axis and equator into space. North celestial pole is directly above earths north pole. The ecliptic is the suns apparent path through the celestial sphere. Band of light making a circle around the celestial sphere. It is our view into the plane of our galaxy. Earths rotation around the sun is called orbital revolution. Sun rotates around the milky way galaxy every 203 million years. An objects altitude (above horizon) and direction (along horizon) specify its location in your local sky. Zenith is your location in respect to you going straight up. Meridian connects the north and the south thru your zenith.
