2013’s historic Russian meteorite fall
The largest meteorite to light up Earth’s sky in more than a century exploded above Russia’s Ural Mountains.
The fireball that occurred above Chelyabinsk, Russia, not only created a loud boom but also generated subtle hissing sounds heard by dozens of witnesses.
Although media around the world got plenty right in their descriptions of the Russian meteor, they also made plenty of mistakes.
Buzz Aldrin on our future in space
From Moon rovers practicing in Hawaii to astronauts controlling lunar robots from space, Buzz Aldrin depicts the legacy and the future of space exploration.
Learn about various efforts to get humans again beyond low Earth orbit.
How to find ET with infrared light
The search for other intelligence has revolved around radio signals, but heat signature also could give away its location.
Astronomers explore the next steps in the search for ET.
Explore the ultimate planetary nebula catalog
The Perek-Kohoutek catalog contains some of the smallest, faintest, and most enigmatic deep-sky treats.
Now you can find any object in this list of planetary nebulae.
Bringing order to the southern skies
Nicolas de Lacaille’s most enduring influence lives in constellations like Carina, Fornax, and Telescopium.
What are we learning from Moon rocks?
A treasure-trove of samples is providing insight into its origin, mineralogy, and evolution.
Discover our solar system’s hidden wonders
Set up your telescope and target martian clouds, Saturn’s inner ring, and more.
Vixen’s GPD2 mount tested
This accessory features portability and superb craftsmanship.