These range from the supermassive black hole in the Andromeda Galaxy to Cyg A*, which is at the heart of a radio galaxy 760 light-years away. We are decades away from operating radio telescopes on the ...

Target and arrow in a single frame.

Relatedly, astronomers may have just pushed the upper size limit of what counts as a planet.

The NASA/ESA/CSA James Webb Space Telescope has discovered a new moon orbiting Uranus. The moon, designated S/2025 U1, is about six miles (10 kilometers) in diameter, which made it hard to spot by ...

Early last year, asteroid 2024 YR4 caught the public’s attention as its chances of hitting Earth in the near future climbed ...

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Now, a study led by SETI Institute scientist Matija Ćuk proposes an explanation linking the formation of the moons and rings, centering on the possibility that Titan is the product of a moon merger.

Tonight's waxing gibbous moon phase will be 92% illuminated, appearing bright and nearly full as the special February 2026 snow moon is set to rise in Cancer this weekend next to a brilliant Regulus ...

I have been writing about the Giant Magellan Telescope for a long time. Nearly two decades ago, for example, I wrote that time was “running out” in the race to build the next great optical telescope ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. It’s one of the most beautiful sky sights of all, but bad ...