Astronomers studying a population of unusually X-ray-silent and overmassive black holes discovered by the James Webb Space ...
The first half of 2026 brought five major space discoveries that challenged existing scientific theories, from record-breaking black holes and an ancient interstellar comet to surprising findings ...
Astrophysics is a field in which theory usually comes first and observation comes afterwards — sometimes decades later. For instance, Einstein's Special Theory of Relativity predicted gravitational ...
When two black holes orbit each other, they eventually spiral inward and collide in one of the most violent phenomena in the ...
Nearly every massive galaxy observed hosts a supermassive black hole at its center. NASA’s James Webb Space Telescope has ...
Black holes usually bring to mind gigantic monsters lurking in the depths of space. They swallow stars, bend light, and ...
A LONG TIME ago, in a galaxy far, far away—somewhere in the general direction of the constellation of Leo—two black holes ...
Black holes are among the most extreme objects in the universe, and now scientists can model them more accurately than ever before. By combining Einstein’s gravity with realistic behavior of light and ...
Scientists analyzing a gravitational-wave signal have discovered that a neutron star and black hole spiraled together on an oval-shaped orbit just before merging. This unusual motion, detected in the ...