AST 2010 Lecture 1: one note astronomy notes
19 Sep 2016
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The earth is about 13,000 kilometers in diameter. Water covers about 2/3rd of the surface. Earth has the ability to support life. The moon is about 3,476 kilometers in diameter. The distance from the moon to earth is about 390,000 kilometers. Light travels from moon to earth 1. 3 seconds. The distance from earth to sun is 150 million kilometers. The earth revolves around 110,000 km per hour. Light travels in 8 minutes from earth to sun. A unit of distance is called an astronomical until. Jupiter is the largest planet in the solar system. The diameter of jupiter is 143,000 kilometers. Saturn is the second largest planet in the solar system. Term used to describe distance in astronomy. Arithmetic notation for light travel- 3 x 10^5 kilometer/second. We can perceive objects that are far away in the universe through electromagnetic radiation. Radiation travels at the speed of light.
