2024

The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in an easy-to-understand, user-friendly style that's perfect for astronomers at any level.

The expanding universe

How can the visible universe be 46 billion light-years in radius when the universe is only 13.8 billion years old?

Telescopes and Equipment

Explore the sky with Celestron’s autoguider

Merging black holes

When black holes merge, is the diameter of the new black hole bigger?

Painted in 1690 by Thomas Murray, this portrait features young Edmond Halley holding a paper with a diagram of an elliptical orbit.

Science, Solar System

Edmond Halley: The man behind the comet

The Orion Arm hangs in the sky over the Okie-Tex Star Party in this two-minute exposure taken at ISO 3200. All images were shot with an astromodified Canon EOS 6D and 16–35mm f/2.8 zoom lens unless otherwise noted. Credit: Adrian Bradley

Astrophotography

Chasing nightscapes: Tips for taking wide-field shots of the land and sky

Saturn and moons, as images by Hubble

Sky This Month: June 2024

Now far from the Sun in the outer solar system, the strange interstellar object known as ‘Oumuamua is depicted here as it’s approached by a questing spacecraft. Project Lyra is hoping to launch such a craft to explore our first known visitor from another solar system and provide the detailed study scientists desperately seek.

Exotic Objects, Space Exploration

‘Oumuamua: Can we catch an interstellar interloper?

Starmus kicked off a spectacular concert event open to the public in Bratislava, which attracted some 25,000 to 30,000 people who flocked to the site. The brilliant electronic musician Jean-Michel Jarre took to the stage, aided by lasers and fireworks, and hosted special guest Brian May of Queen. Credit: David J. Eicher.

Starmus VII hit all the right notes from beginning to end

An Apollo 15 image of Lambert Crater with Mons Undset to its west (right, where we've added a circle) casting a pyramidal shadow. Mons Undset was named for novelist Sigrid Undset. Credit: NASA

The mystery of a pyramid-like mountain on the Moon missing its name

HST image of Jupiter near opposition

Science, Solar System

How old is each planet in our solar system?

Artist's concept of Planet X

Could we find Planet Nine using JWST?

Robotic Spaceflight, Science

A visit to the cutting-edge Southwest Research Institute