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

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

For more than two decades, NASA’s Neil Gehrels Swift Observatory has acted as one of astronomy’s fastest responders, ...

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 ...

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

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 ...

Astronomers have uncovered a pair of giant planets that are lighter than cotton candy. The two so-called super-puffs are the ...

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