Sagittarius A* has been seen by human eyes with an "image produced by a global research team called the Event Horizon ...

On balconies and in backyards, Wi-Fi–enabled telescopes are connecting astronomy enthusiasts across six continents.

The Cherenkov Telescope Array just got a major boost for distributing its data, a development that will expedite scientific ...

Astronomers analyzing M87*, the first black hole ever imaged, have discovered that its shadow changes from year to year. The ...

Seven planets will line up for a rare "planetary parade" today (Feb. 28) and you can watch it live online, beginning at 12:00 p.m. ET (1700 GMT).

Create a Physics World account to get access to all available digital issues of the monthly magazine. Your Physics World account is separate to any IOP acco ...

Prepare for an unforgettable 'parade of planets' as 7 planets will align in a rare celestial event on Feb. 28, for the last ...