This enormous chain of hundreds of galaxies—a cosmic filament—is twisting through space 400 million light-years away ...

When you gaze up at the night sky, it’s easy to feel as though you're looking into an endless, empty canvas sprinkled with distant, tiny lights. Our solar ...

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...

The James Webb Space Telescope (JWST) is allowing astronomers to examine distant galaxies in the far reaches of the early universe for the first time. Some of these have chemical signatures that seem ...