Magazine

Astrophotography

How to capture sky images with a camera and tripod

Science

David H. Levy’s Evening Stars: Who needs a clear sky?

Robotic Spaceflight

Hubble is in space and the mirror is exposed, so how has the mirror stayed clean? Is it possible that space debris and micro particles could hit it?

Stars

How can we tell if a star belongs to a star cluster or is in the space between the cluster and the observer?

Exotic Objects

What exactly are blazars and quasars? How are they different?

Science

Images from a great astronomer’s life

Observing

Glenn Chaple’s Observing Basics: Teen triumphs

Astrophotography, Observing

Tony Hallas’ Cosmic Imaging: Think inside the box

Planets

Mercury in the spotlight

Observing

Stephen James O’Meara’s Secret Sky: Order from “chaos”

Science

Why doesn’t our Moon have a name?

Cosmology

Why isn’t dark energy considered the “fifth force” in the way gravity, electromagnetism, weak nuclear, and strong nuclear are forces?