Features

Neptune’s Discovery 150 Years Later

When this remote planet was spotted 150 years ago this month, it proved a triumph for Newton’s laws of motion. But the search that led to the planet proved far from orderly.

Lunar Windows to the Heavens

Hubble’s ultrasharp view from above the atmosphere has astronomers lusting for the ultimate high ground: the farside of the Moon.

Sky Almanac

A stellar month for observers features the full Moon being swallowed by Earth’s shadow, creating a total lunar eclipse for all the Americas, and glorious Saturn at its best for the year.

Eclipse at Harvest Moon

This month’s total lunar eclipse, the last for North Americans until 2000, will provide stunning views and great photo opportunities.

Faint Balls of Fire

The late summer sky offers a horde of globular clusters to challenge owners of large telescopes.

Discover the Autumn Sky

It’s a myth that you must have a big scope to explore the universe. A 2- to 6-incher reveals countless wonders in the fall sky.

Make Your Scope Light-Tight

Several simple techniques will reduce scattered light in your Newtonian or Dobsonian telescope and help improve image contrast.

Departments

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