Magazine

Exoplanets, Planets, Solar System

Weird Object: Pluto and Charon

Exotic Objects, Stars

A white dwarf pulls matter from its binary and explodes in a nova. Yet when the mass hits a certain limit, the star bursts in a type Ia supernova and is destroyed. Why the difference?

Science

Web Extra: The sights and sounds of Starmus

Cosmology

Is the cosmic microwave background a shell around us? Or are the microwaves everywhere in the universe?

Astrophotography

When rejection is a good thing, part 2

Exoplanets, Planets, Solar System

A spooky shadow effect

Telescopes and Equipment

Web Extra: New eye opens up the skies

Exoplanets, Planets, Solar System

How are Saturn’s rings replenished? Will the process shut down?

Deep-Sky Objects

Web Extra: A gallery of southern sky splendors

Cosmology

Could quantum entanglement be a result of the Big Bang?

Exoplanets, Observing, Planets, Solar System, The Moon

Saturn at its glorious best

Science

Beyond the red