Dark Matter and the Dinosaurs - Chapter 7 - The Short, Glorious Lives of Comets Summary & Analysis

Lisa Randall
This Study Guide consists of approximately 49 pages of chapter summaries, quotes, character analysis, themes, and more - everything you need to sharpen your knowledge of Dark Matter and the Dinosaurs.
This section contains 933 words
(approx. 3 pages at 400 words per page)
Buy the Dark Matter and the Dinosaurs Study Guide

Summary

Comets—some of the more spectacular celestial objects—have been observed and puzzled over for centuries. Despite what seems like a smoky tail, comets are cold, icebound space travelers with mostly elliptical (oval) orbits. Edmond Halley, a friend of Sir Isaac Newton and amateur astronomer, correctly predicted the reappearance of the comet that bears his name over a 300-year span using Newton's laws and accounting for the gravitational influence of Jupiter and Saturn. Comets carry gasses solidified into ice that return to their gaseous state as the comet draws closer to the heat of the sun. They originate in the far, frozen regions of the solar system and consist of the coma, or aura composed of ice and dust particles, the core or nucleus, and the tail. So-called meteor showers are caused by solid debris that breaks...

(read more from the Chapter 7 - The Short, Glorious Lives of Comets Summary)

This section contains 933 words
(approx. 3 pages at 400 words per page)
Buy the Dark Matter and the Dinosaurs Study Guide
Copyrights
BookRags
Dark Matter and the Dinosaurs from BookRags. (c)2016 BookRags, Inc. All rights reserved.
Follow Us on Facebook