An unusual sea slug with a large hood, a tail with fingerlike projections and glowing bioluminescence has been found living ...

The chances of intelligent life emerging in our universe—and in any hypothetical ones beyond it—can be estimated by a new ...

A group of astronomers analyzing data from the James Webb Space Telescope ( JWST) say some of the oldest galaxies in our ...

The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would ...

This swath of dust, which blocks out light from the bright nebula Gum 55 behind it, is known as the Dark Wolf Nebula.

The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would see dim signals from small, primitive galaxies. But data are not confirming ...

If another gravity theory is correct, "then the broader implications are enormous," astrophysicist Stacy McGaugh told ...

Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.

GENEVA, Switzerland — For over two decades, astronomers have been puzzled by the mysterious “dark energy” driving the ...

How the same region of the Universe would look in terms of the amount of stars for different values of the dark energy density. Clockwise, from top left, no dark energy, same dark energy density as in ...

After immortalizing the whirlwind of the last four years—relapse, intervention, recovery—in his award-winning stand-up ...