Chapter 5

Chapter 5 - Chapter 5: The Present Solar System Brief...

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Chapter 5: The Present Solar System - Brief information o 9 historic planets, 7 of which with satellites moons (Mercury + Pluto) o 6000 large-160000 asteroids between Mars and Jupiter. Unable to accrete due to Jupiter o Kuiper Belt: 200 million comets from Pluto to 20x distance from Sun - 5.1) Comets o Halley’s Comet: Close to earth in 1910. o Greatest distance to Sun: Aphelion, closest Periphelion. - 5.12) Asteroids o Most are just outside Mars ~ 420 x 10^6 o Notable comets: Ceres (biggest, ¼ of our moon), Pallas (2 nd ). Trojan comets lead and follow Jupiter. o Two major asteroid collisions with Earth Chicxulub impact event: 64.98 Million years ago, 10km in diameter hits northern tip of Mexico creating diameter of 180km. Atmosphere filled with dust = solar insolation leading to a cold earth and death for many dinosaurs. CO 2 released into atomosphere and asteroidal winter followed by greenhouse summer. This happened again (2 nd time smaller scale) 1908: Small comet in Siberia, Russia. Possibly a meteroid, hit with such velocity it broke up explosively before touching ground. -
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This note was uploaded on 04/28/2011 for the course CHEM 181 taught by Professor Multiple during the Spring '11 term at McGill.

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Chapter 5 - Chapter 5: The Present Solar System Brief...

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