A NASA satellite that’s been orbiting as space junk since 1967, Relay 2, emitted an unexpected, powerful radio burst that ...

Matter in intergalactic space is not randomly scattered - it forms a vast network of filamentary structures that make up the ...

Supermassive black holes usually lurk unseen, but when an unlucky star drifts too close they ignite titanic outbursts ...

The Hubble Space Telescope's evidence of an "intermediate-sized" black hole about 6000 light-years away in the closest globular star cluster to our home planet. Credit: NASA's Goddard Space Flight ...

One of the most perplexing discoveries in modern astronomy has been finding supermassive black holes, some weighing billions ...

A new kind of stellar explosion, far brighter and longer-lasting than supernovae, may help scientists explore the secrets of ...

A new generation of black hole research is unfolding thanks to artificial intelligence, massive simulations, and cutting-edge ...

In a recently published paper in Physical Review Letters, scientists propose a comprehensive theoretical framework indicating ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have instead formed inside a colossal black hole.

Galaxies shine in a rainbow of emissions from gas, dust, and stars. Each of these building blocks emits light at specific ...

Nowadays, the dark of night is interspersed with the light of stars. But before the stars were born, did light shine at the ...