In the world of black holes, there are generally three size categories: stellar-mass black holes (about five to 50 times the ...

Fifteen thousand light years away something is semaphoring into space. And scientists are eager to solve its riddle.

Every 44 minutes, a mysterious space object nearly 15,000 light-years away sends out a blast of radio waves and high-energy X ...

NASA and the European Space Agency launched an astronomical revolution. When the Space Shuttle Discovery roared into the sky ...

After the initial discovery, we began follow-up observations using telescopes around the world, hoping to catch more pulses. With continued monitoring, we found the radio pulses from ASKAPJ1832 arrive ...

Astronomers have discovered a strange new object in our Milky Way galaxy. The celestial object is emitting X-rays around the ...

Astronomers have discovered a strange object in our galaxy that flashes every 44 minutes—and it’s unlike anything we’ve seen ...