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 ...

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 ...

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

Astronomers may have witnessed one of the rarest and most dramatic cosmic events ever seen: a long-sought intermediate-mass ...

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 ...

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

Einstein Probe X-ray transient EP260623a was detected 6.8 billion light-years away in Pegasus on June 23, 2026, triggering a ...

Collaboration connects space technology to cleantech solutions with a Fortnite island launch, and live telescope feeds ...