Telescopes 4 inches or less in diameter are portable, easy to use, and great beginner instruments. Here, I’ll walk through ...

After 30 years of observing, I’ve compiled a list of some of my favorite deep-sky objects. These look best with a large ...

New observations by NASA's James Webb Space Telescope have eliminated the last remaining impact threat posed by asteroid 2024 ...

The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration.

The Very Large Telescope (VLT) and the Atacama Large Millimeter/submillimeter Array (ALMA) has captured a "violent cosmic ...

The two so-called super-puffs are the size of Jupiter, the biggest worlds found so far to have less density than cotton candy ...

Gamma-ray burst GRB 260623A was detected by NASA’s Fermi telescope morning at 12:56 UTC Tuesday, triggering a global ...

A high-stakes mission to save NASA's Swift Observatory from a fiery end has relied on Arizona. Here's an inside look ahead of ...

NASA and the commercial company Katalyst Space have concocted a plan to stop a powerful astrophysics satellite from hurtling ...

Two “super-puff” planets lighter than candy floss have been discovered by scientists. They are among the lowest-density giant ...

Euclid’s ultra-wide view of the galactic bulge captured more than just stars. The seemingly empty, dark patches in the image ...