AST101H1 Chapter Notes - Chapter 12.1-12.4: Acid Rain, Solar Wind, Reduced Properties

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Bryan Gaensler

Document Summary

scraps left over from formation that give understanding. Have been battered by impacts, measure size through brightness. Determine shape by monitoring brightness variations as rotates. Comparing visible / infrared brightness tells proportion of reflectivity / absorption. Shine with reflected sunlight - size, distance, reflectivity. Those near asteroid belt contain larger number of dark, carbon-rich materials and water --> cooler. Most are in asteroid belt between mars and jupiter. 60 degrees ahead of jupiter or 60 degree behind. Resonances disrupted orbits of planetesimals and prevented from forming. Crash into each other --> grinding each other down. Meteor is flash of light caused by a particle entering atmosphere. Usually covered with dark, pitted crust (result of fiery passage through atmosphere) Made of high density iron and nickel mixed with other metals or lower density rock. Temperature past 3 au from the sun is low enough for carbon to form. Rarely appear in our orbit --> must have been influenced by gravity.