Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

Since 2018, we've seen 1ES 1927+654 generate jets in real time and found it may have a lone white dwarf orbiting near the ...

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

A large international team of scientists has observed a phenomenon that astronomers didn't ever expect to see happen in real ...

Active galaxy 1ES 1927+654, circled, has exhibited extraordinary changes since 2018, when a major outburst occurred in visible, ultraviolet, and X-ray light. The galaxy harbors a central black hole ...

A large international team of scientists observed a rare event in real time: a dramatic increase in radio emission and the ...

Such issues took center stage this week, beginning on Tuesday as Pete Hegseth, President-elect Donald Trump’s nominee to be ...