October 1973

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The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in an easy-to-understand, user-friendly style that's perfect for astronomers at any level.

Features

The Hurtling Moons of Barsoom

By Carl Sagan

pg. 4

Sky Almanac

By Terence Dickinson

Parade of Planets Herald D.S.T. Demise at Month's End - Mars - Jupiter - Venus - Saturn - Mercury - Asteroids - Alberio

pg. 14

October Variable Star

By R. Newton Mayall

- Delta Cephei

pg. 18

Stellar Frontiers

By Wm. Bruce Weaver

Hercules X-1: How to Weigh a Pulsar

pg. 20

October Star Dome

By John G. Harmon

pg. 24

Gazer's Gazette Kohoutek

By Terence Dickinson, James A. Louden

Great Comet of the Century

pg. 27

Authors

pg. 34

Bibliographies

pg. 34

Photography in Astronomy Integration Printing

By Brad D. Wallis, Robert Provin

An Aid to Long Exposure Astrophotography

pg. 35

Star Gallery

pg. 73

Constellation Close-up

By Thomas C. Bretl

Pisces

pg. 42

Memo from the Publisher

pg. 46

	Sun	Sun	Moon
RISE	—		—	PHASE	—
SET	—		—	DISK	—

	Mercury	Mercury	Venus	Venus
RISE	—		—
SET	—		—
		—		—

	Mars	Mars	Jupiter	Jupiter	Saturn	Saturn
RISE	—		—		—
SET	—		—		—
		—		—		—