According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

ORCs are vast, faint rings of radio energy that surround galaxies and can be detected only in radio wavelengths of the ...

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. Space is big, and ...

Even before the first stars lit up the Universe, the Cosmos was not the cold place most researchers once imagined. New ...

We obviously can’t put the universe on a giant set of scales, but scientists have found astonishingly clever ways to […] ...

This hypothesis is not new. It was given the affectionate nickname of Big Crunch, and says that the accelerated expansion of ...

Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an ...

The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

The bright outflow jets of J0529 are being fed by a process called Super-Eddington Accretion, where an object exceeds its ...

Mathematical quirks of our universe have led some cosmologists to wonder whether the cosmos was actually born in a black hole ...