Astronomers have identified a tiny quasi-moon, 2025 PN7, orbiting near Earth for about 60 years. This 62-foot-wide near-Earth ...

Astronomers at Penn State have nicknamed the objects “universe breakers,” which may be unusual black hole atmospheres and could represent a missing link in the fast growth of supermassive black holes.

How does one time the velocity of a black hole racing across the universe? A billion-year-old impact, painstakingly sensitive detectors, and ten years of gravitational wave science were needed in this ...