Features

Fire Fountains of Aristarchus

Geysers of volcanic fury dwarfing any on Earth spawned rivers of molten lava that carved the Moon’s Aristarchus Plateau.

Galaxy Time Machine

Looking far into the past, Hubble finds elliptical galaxies looking just like they do today but the forerunners of spirals appearing oddly distorted or fragmented.

Only Six with Rings

Astronomers remain perplexed by these odd-looking galaxies with rings circling their poles.

Sky Almanac

Saturn returns to the morning sky in April, but the real highlights are eclipses of the Moon and Sun.

Descent into Darkness

Vivid memories and stunning photos rewarded those who witnessed November’s spectacular total solar eclipse.

Twelve Splendid Spirals

Even a 6-inch scope can show you striking detail in spring’s best spiral galaxies.

Glows, Bands, and Curtains

Intricate shapes and a rainbow of colors highlight the beauty and complexity of the northern lights.

Alignment by Laser Light

Fine-tune the optics of your reflecting telescope with this handy collimating tool.

Departments

Behind the Scenes
Letters
AstroForum
AstroNews
Amateur News
New Products
Astronomy Books
AstroBytes
Meetings and Events
Resources & Photofacts
Advertiser Index
Reader Reports