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May 2013 | Astronomy.com

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May 2013

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May 2013

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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

How life survived a cool early Sun

by Bruce Dorminey

How did Earthт??s surface stay warm enough for liquid water to exist and life to emerge?

Web Extra: Brewing up a solar storm

by Richard Talcott

Earth and the life on it managed to survive a faint Sun during the solar systemт??s early years. We face a far more luminous star in the 21st century, and one that is nearing maximum activity during 2013.

Why the universe has no center

by Liz Kruesi

Confused by the universeт??s size, shape, and limits? Let our experts clarify these complex concepts.

Web Extra: Why cosmic expansion is speeding up

by Liz Kruesi

Whatт??s the mysterious т??stuffт?? that causes this acceleration?

The science behind UFOs

by Philip Plait

Even the strangest sightings have logical explanations.

Web Extra: More UFOs identified

by Sarah Scoles

Although some UFOs are truly bizarre, they still can have explanations that do not involve aliens.

Target Hubbleт??s galaxy classes

by Alan Goldstein

How do astronomers classify galaxies? Find out by observing the various types.

Dennis Mammanaт??s cosmic portraits

by Dennis Mammana

This night sky photographer blends the terrestrial with the celestial.

Web Extra: More celestial images from a night sky photographer

by Karri Ferron

Dennis Mammana captures the color, motion, and majesty of the heavens in ways one rarely sees.

How to choose the right binoculars

by Mike D. Reynolds

When the time comes to observe with both eyes open, follow these tips and you won't go wrong.

Explore 11 spring binocular gems

by Phil Harrington

Grab your binoculars and peruse a globular cluster, double stars, and lots of galaxies.

Web Extra: 10 more great spring binocular sights

by Phil Harrington

When the weather begins to warm, get your sky-fix by grabbing your binoculars.

"Astronomy" tests the Telescope Drive Master

by Mike Reynolds

This easy-to-use device will smooth out your mountт??s tracking to make your images crystal clear.

Columns

Hubble and the light-year

by Bob Berman

Close encounters

by Glenn Chaple

Effects of the eclipse

by Stephen James O'Meara

The right number of images

by Tony Hallas

Departments

Ask Astro

Conserving stellar fuel

Trojan asteroids

Globular clusterт??s stars

Earth spins as it orbits

Milky Way

The Sky this Month

Bright planets meet at dusk

StarDome and Path of the Planets

In Every Issue

From the Editor
Breakthrough
Letters
New Products
Final Frontier

Snapshot
Astro News
Web Talk
Reader Gallery

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Searching for Far Out and Wandering Worlds

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An artificial comet holds secrets to Earths life

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Young super-Jupiter found wandering without a parent

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Searching for aliens who already know we're here

A gamma-ray burst hints that LIGO's double black holes started as one massive star

Pluto's largest moon may have once had an ocean

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