Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '

April 2011

asy-cv0411
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

Hunting for earthlike planets

First astronomers have to find a nearby planet in its star's habitable zone, and then they’ll need to characterize its atmosphere to determine if life might exist there.

Web Extra: Extrasolar atmospheres

Studying the atmospheres of earthlike planets may be a few years in the future, but astronomers are analyzing weather on the largest worlds now.

Messages from Mercury

The MESSENGER spacecraft enters orbit around the innermost planet in March to explore its geological history, thin atmosphere, dense core, and the strange stuff at its poles.

Web Extra: Mercury in the cross hairs

NASA’s ambitious MESSENGER spacecraft will have company by the end of this decade, when the BepiColombo mission reaches the innermost planet.

Star-struck in Iceland

The tiny North Atlantic island nation boasts a large amateur astronomical society, inspires the world’s space artists, and features some of the most dazzling auroral displays anywhere.

Web Extra: Appreciating a celestial light show

Iceland isn’t alone in offering dramatic views of the northern lights.

Explore the Centaurus A galaxy cluster

Point your telescope toward the south this spring, and target this group of little-observed objects.

Target galaxies with a big gun

These eight spring showpieces reveal exquisite detail through large scopes.

10 top spring binocular treats

All you need to enjoy these gems is a dark sky and two eyes.

Web Extra: More spring objects to observe

Enjoy more images of bright sky treats you can see through your binoculars.

Zhumell’s 25x100 binoculars capture lots of light

These impressive binoculars provide brilliant, high-power views of celestial objects.

In Every Issue

This Month in Astronomy
Letters
Astro News
Deep-sky Showcase
Reader Gallery
Beautiful Universe
Web Talk
New Products
Advertiser Index
The Cosmic Grid
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

ADVERTISEMENT
ADVERTISEMENT
BoxProductcovernov

Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook

Loading...