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 ...

As Spain prepares for a rare trio of eclipses that begin in August 2026, this stunning city in the path of totality is ...

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 ...

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

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

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 ...

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

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 ...