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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.
Relativity turns 100
One hundred years ago, while working in the Swiss patent office, Albert Einstein invented a theory that touched off a revolution in physics. How did he do it?
In the 20th century, general relativity became the preeminent theory for
decoding the cosmos. In the coming century, relativity will blaze new trails even as other theories try to supercede it.
When the Cassini spacecraft swooped past Titan in October, it got a super view of this enigmatic Saturn moon.
Planetary nebulae remnants of dead stars are some of the most
beautiful celestial objects. Learn why these cosmic cadavers shine the way they do and which are the most dazzling to observe.
Explore a lunar debris field
Impacts transformed the region of lunar crater Janssen and the Vallis Rheita. The formation of huge, nearby basins pocked this area, making it look like a galactic battlefield.
Globetrotting NASA astrophysicist Fred Espenak tells people when and where to go to view solar and lunar eclipses.
Backpack this scope
Costing less than $100, Celestron’s ExploraScope, the latest offering for young skygazers, is a bargain.
This month in Astronomy
Bob Berman's strange universe
Glenn Chaple's observing basics
Planetary scientist Chris McKay
A star by any other name
Galileo Visions’ Gravitator
Orion Astronomer’s VersaTool
China’s Space Program
Icy Worlds of the Solar System
The Beginner’s Observing Guide
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