Black holes

The basic shape that best describes our expanding universe is also the hardest shape for physicists to understand.

Today’s observatories document every pulse and flash in the sky each night. To understand how the cosmos has changed over longer periods, scientists rely on a more tactile technology.

Primordial black holes could rewrite our understanding of dark matter and the early universe. A record-breaking detection at the bottom of the Mediterranean Sea has some physicists wondering if we just spotted one.

Physicists spotted a “terribly exciting” new black hole, doubled down on weakening dark energy, and debated the meaning of quantum mechanics.

The James Webb Space Telescope has found a lonely black hole in the early universe that’s as heavy as 50 million suns. A major discovery, the object confounds theories of the young cosmos.

A team of mathematicians based in Vienna is developing tools to extend the scope of general relativity.

Physicists hope that understanding the churning region near singularities might help them reconcile gravity and quantum mechanics.

The giant holes in galaxies’ centers shouldn’t be able to merge, yet merge they do. Scientists suggest that an unusual form of dark matter may be the solution.

Astronomers are reveling in the James Webb Space Telescope’s discoveries about the formative epoch of cosmic history.