PHYS P20 Lecture Notes - Lecture 1: Auto Racing, White Dwarf, Messier 82
Document Summary
Universe: journey from earth to the edge of the cosmos. Some question why it"s called earth instead of ocean, since most of it is ocean. Moving at the speed of light, would reach the moon at 1. 3 seconds. Moon diameter: 3476 km (half of earth) Moon is largest satellite in our solar system. Mean core temperature: 15 million degrees celsius. Asteroid belt contains at least 200 million asteroids. Mass and volume greater than all other planets combined. Io, jovian moon: most volcanically active world in the solar system. Europa, jovian moon: surface: pack ice, 25 km thick. Thermal vent at the base of a salty ocean may yet prove to nurture life. Ganymede, jovian moon: largest moon in the solar system. The most ancient landscape in the solar system is unchanged for 4 billion years. Enceladus, saturnian moon: most reflective objective in the solar system. Rings of saturn width: 250000 km, depth: 1 km.
