September 1987

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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 Changing Shape of Planetary Rings

By Larry W. Esposito

pg. 6

Possible Planetary Systems Discovered

By Richard Talcott

pg. 18

Cassini

By Donald F. Robertson

pg. 20

Forum

Thunderbolts Can't Short-Circuit Texas Star Party

pg. 26

Special Report: Riverside and the Texas Star Party

pg. 34

In Focus

pg. 44

Behind the Scenes

pg. 45

Gazer's Gazette

By David Higgins, David J. Eicher

The Secret World of Dark Nebulae

pg. 46

Eye on the Sky

By Robert Burnham

Seeing the Zodiacal Light

pg. 54

Equipment Atlas

By Thomas B. Woods

Simulating Clusters on Your Computer

pg. 63

AstroMart

ASTRONOMY Advertiser Index

pg. 68

AstroNews

pg. 74

AstroCalendar

pg. 77

Astronomy Reviews

pg. 82

Stellar Frontiers

By Stephen Larson, David H. Levy

Observing Comet Halley's Near-Nucleus Features

pg. 90

Photography in Astronomy

By Robert Reeves

Exploring the Summer Milky Way

pg. 99

The Backyard Astronomer

Delphinus/Sagitta

pg. 102

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

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

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