Magazine

Science

Astronomy’s year was 2009

Stars

Ask Astro web extra: Have we found multiple planet systems around other stars?

Observing, Telescopes and Equipment

Is there a difference between visual and imaging filters?

Science

The use of humor in introductory astronomy teaching

Astrophotography

Tony Hallas’ Cosmic Imaging: Getting clean images

Science

Bob Berman’s Strange Universe: Cool expressions

Robotic Spaceflight, Science

Looking forward to Webb’s view of the past

Observing

Glenn Chaple’s Observing Basics: Engaging astronomy’s teens

Solar System

With many new planet discoveries being hot Jupiters, is it possible that Mercury is the leftover core of a gas giant?

Science

A Jupiter photo gallery

Cosmology

I’ve heard that wormholes could make time travel in the future possible. How realistic is this phenomenon?

Observing

Read more about the darkest skies