Books by Philip S. Harrington
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Astronomy For All Ages
The Deep Sky: An Introduction
Eclipse!
The Illustrated Timeline of the Universe
The Space Shuttle
Star Ware, 4th edition
Star Watch
Touring the Universe Through Binoculars
Chapter 1.
Topics covered
Basic terms and definitions, including:
Sky motions
Daily (diurnal) motion
Annual motion
Precession
Magnitude
Astronomical distances and sizes
Celestial positioning
Astronomical catalogs
An explanation of things to come
Chapter 1 notes
Page 9. The distance to the Andromeda Galaxy is 17 billion billion miles (27.4 billion billion kilometers).
Recommended reading
Books
Nightwatch; Dickinson, T.; Firefly Books, 1998; ISBN: 1552093026
Sky Observer's Guide; Mayall, R., et al; St. Martin's Press, 2001; ISBN: 1582381550.
Web sites
Astronomical Distances
You tell it how fast you want to travel and this web site will tell you how long it will take to get to different celestial objects.