McGraw-Hill OnlineMcGraw-Hill Higher EducationLearning Center
Student Center | Instructor Center | Information Center | Home
Interactives
Additional Animations
Astronomy Timeline
Career Center
Universally Speaking
Additional Weblinks
Message Board
Constellation Quiz
NetTutor
Outline
Chapter Overview
Essay Questions
Questions for Review
Problem Solving
Online Quiz
Flashcards
Crossword Puzzle
Web Tutorial
Animations
Web Links
Feedback
Help Center


Explorations: Stars, Galaxies, and Planets
Thomas Arny, University of Massachusetts
Cosmology

Essay Questions



1

M31, the great galaxy in Andromeda and a member of the Local Group of galaxies, is approaching us. Does this mean that the Hubble law is wrong? Why?
2

Suppose the Hubble constant were discovered to be five times larger than is now believed. How would that affect our estimate of the age of the Universe?
3

Does it bother you that the Universe may expand forever?
4

Why do most stars, including our own Sun, contain more helium than the 24% formed during the Big Bang?








Copyright2002 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.