Features

100 Years on Mars Hill

They mapped Mars, discovered Pluto, and explored galaxies. In these and other ways, the astronomers at Lowell Observatory helped push back astronomical frontiers.

Countdown to the Big Comet Crash

Astronomers eagerly anticipate Comet Shoemaker-Levy 9’s collision with Jupiter to see what nature’s probe can tell them about the giant planet.

Sky Almanac

Venus dominates the evening sky in June, reaching its peak altitude while visiting the Beehive star cluster.

Tracking Down a Quasar

Get out your 8-inch or larger telescope and stalk this elusive starlike prey.

Glittering Realms of the Summer Milky Way

It’s a visual feast touring the summer’s best clusters and nebulae. With naked eye, binoculars, or small scope, stroll through the constellations Cygnus, Aquila, and Sagittarius.

Exploring Mare Humorum

A small telescope will reveal the mountains, craters, and rilles of an ancient lunar impact basin.

Joining Land and Sky

Combine beautiful photos of the night sky with earthly foregrounds to create breathtaking images.

Departments

Behind the Scenes
Letters
Viewpoints
AstroNews
Amateur News
Reader Reports
Astronomy Books
New Products
AstroBytes
Readings and Credits
Meetings and Events
Advertiser Index