ASTRON 2B03 Study Guide - Midterm Guide: Sudbury Neutrino Observatory, Spiral Galaxy, Kuiper Belt

• School: McMaster University
• Department: Astronomy
• Course: ASTRON 2B03
• Professor: Christine Wilson

Document Summary

If earth were a basketball, the moon would be tennis ball. It would take nearly 1 million earths to fill the sun. 900 jupiter like planets can fit inside the sun. Around 50 moons can fit inside the earth. Jupiter is king of the planets, big ball of gas, 67 satellites, miniature solar system. Saturn has many rings made up for rocks, dust, ice moon is titan. Neptune and uranus are last true planets, 30 times farther from the sun than earth. Pluto is a dwarf planet and is part of kbo. Has not cleared the neighbourhood around its orbit. Weakness of these definitions is that it only applies to our solar system. Sun makes up the 99. 8% mass of the entire solar system. Sun is 4. 5 billion years old and will last another 5 billion years. As sun gets older, it will get brighter and hotter and bigger. Sun revolves around the milky way every 225-250 million years.