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 2007

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

Black holes: seeing the unseeable

New technology will reveal the event horizon - direct evidence that black holes exist.

Online extra: Watch a black hole spin

Animation shows the energetic region near a massive object''s point of no return.

New Horizons flies past Jupiter

Bound for Pluto, the New Horizons spacecraft gets the closest look at Jupiter and its moons in 4 years.

Online extra: New Horizons at Jupiter

Follow NASA''s New Horizons mission as it whisks past Jupiter.

The Big Bang + 1 second

Scientists are trying to find the torrent of neutrinos unleashed following cosmic genesis.

Explore a dozen must-see galaxies

Venture off the beaten path to observe twelve extragalactic gems Messier missed.

Online extra: Explore 14 more spring galaxies

Northern California observer Steve Gottlieb lists more than a dozen targets awaiting you at the eyepiece.

Observe the sky's most colorful double stars

You'll have no problem seeing these celestial beauties through a small telescope, even through haze and light pollution.

An easy guide to astro-speak

If you've ever wondered about some of the terms astronomers use, here's an illustrated guide.

Orion's new 4-inch powerhouse

The 100ED EQ-G's high-quality optics provide plenty of great sky views at a price that doesn't break the bank.

Departments

This month in Astronomy
Beautiful universe
Letters
Bob Berman's strange universe
Glenn Chaple's observing basics
Phil Harrington's binocular universe

The Lion's roar

Stephen James O’Meara’s secret sky
News
The sky this month
New products
Coming events
Advertiser index
Resources
Reader gallery
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...