SPECIAL INSERT: Astronomy’s guide to Go-to telescopes

Phil Harrington looks at 23 of the best, plus a speical section on seven CCD cameras.

How we’ll fix Hubble

NASA returns to the Hubble Space Telescope one last time.

Saturn revolution

In its first 4 years at Saturn, NASA’s Cassini spacecraft has discovered methane lakes on Titan, icy plumes on Enceladus, and unimagined details in the planet’s rings and atmosphere.

Web extra: Cassini’s first 4 years at Saturn

View some of Cassini’s best images of Saturn.

Calling all space probes

These spacecraft monitor the Sun, study Saturn, and explore interplanetary – and soon, interstellar – space.

Taking Venus by storm

Europe’s new spacecraft is revealing the composition, circulation patterns, and intense lightning of our sister world’s atmosphere.

Sky testing Orion’s 102mm f/7 ED

Crave an apochromatic refractor but your budget won’t allow it? Here’s a good scope to consider.

Your 20-year solar eclipse planner

Between now and 2028, Earth will witness 15 total solar eclipses. Here’s your guide to these extraordinary events.

Inside Arizona’s meteorite treasure chest

Hidden away at Arizona State University, tens of thousands of space rocks tell researchers the solar system’s story.

Web extra: More meteorite images

Continue to browse the collection at Arizona State University’s Center for Meteorite Studies.


This month in Astronomy
Beautiful universe
Web talk
Bob Berman’s strange universe
Phil Harrington’s binocular universe

Cepheus’ fall delights

Stephen James O’Meara’s secret sky
The sky this month
New products
Advertiser index
Reader gallery