A newly discovered neutron star is behaving so strangely that it may alter our understanding of the dense remains left behind when stellar objects die ...

The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.

The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again ...

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early ...

A groundbreaking study combining the efforts of amateur and professional astronomers has redefined our understanding of ...

But researchers have used the James Webb Space Telescope, a collaboration of NASA and its European and Canadian space ...

The 245th Meeting of the American Astronomical Society is being held Jan. 12 to Jan. 16 and will feature remarkable findings ...

But in recent years, astronomers have begun to find compact objects that emit pulses of radio waves at a much slower rate. This has baffled scientists, who had thought that radio wave flashes ...

Researchers found far more hidden black holes than previously known, indicating plenty of behemoths lurking in thick clouds ...

The Andromeda galaxy is a colossal marvel in our sky, hosting over 1 trillion stars. Now, astronomers have used the Hubble ...