TIL I learned about gravastars (aka a gravitational vacuum star), theoretical objects related to black holes. Both are massive & ...

Did you know some of the brightest sources of light in the sky come from the regions around black holes in the centers of ...

We have a hard time explaining the existence of supermassive black holes in the early universe. It looks like there just isn't enough time to make them from "normal" processes. So maybe it was ...

When British physicist Roger Penrose suggested in 1969 that energy could be pulled from a rotating black hole, it sparked a ...

Note: The verification e-mail to complete your account registration should arrive immediately. However, in some cases it ...

NASA’s Nancy Grace Roman Space Telescope is gearing up to unlock the deepest secrets of the universe with three ...

Thirty-five years ago, the Hubble Space Telescope was launched into orbit. It's been sending back galactic data and images ...

T he Perseus cluster is enormous. It has a mass equivalent to 600 trillion Suns, and it looks like it has not stopped growing ...

Cosmologist Katie Mack breaks down what the latest findings about dark energy mean for our universe’s future. Either way, it ...

Scientists may have finally found the universe’s missing matter - hidden in invisible hydrogen gas far beyond galaxies.

The structural backbone of this bridge is dark matter, the universe's most mysterious "stuff ... What remains of this cluster ...

A groundbreaking study,published in March 2025 on the preprint server arXiv, reveals that ultralight dark matter might have ...