On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

A discovery of binary stars could be the first step in building a more complete picture of how our galaxy formed, according ...

Evolving dark matter may explain cosmic acceleration. Observations support a mixed model. For years, a stubborn puzzle has sat at the center of the standard cosmological model. The evidence clearly ...

The Hubble Space Telescope, a cornerstone of modern astronomy, has been providing breathtaking images and invaluable data for ...

A new collage from the James Webb Space Telescope reveals eight dazzling examples of gravitational lensing.

NASA’s Hubble Space Telescope captured a surprising asteroid trail while observing a distant spiral galaxy 102 million ...

Astronomers using the James Webb Space Telescope may have found the universe’s first “dark stars.” Within the first few ...

How old are the stars? Even with the most accurate tools currently available for modeling stellar evolution, the answer ...

The James Webb Space Telescope has uncovered a massive red supergiant star just before it exploded, finally solving a cosmic ...

Dark matter, mysterious invisible stuff that makes up most of the mass of galaxies including our own Milky Way, is confounding scientists again, with new observations of distant galaxies conflicting ...

From GPS to innovations in computing and optics, technologies developed for space research at UC Santa Cruz touch nearly ...

Astronomers spot a red supergiant star hidden in dust just before it exploded, solving a long-standing mystery about missing supernovae.