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

Hubble Space Telescope can "only see the universe in shades of grey," according to NASA's Goddard Space Flight Center. Learn ...

A natural satellite is simply a celestial object that orbits a planet or a smaller body. Unlike the ones we build and send up ...

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 ...

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

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

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 ...

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

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

According to theory, massive red supergiant stars should cause most supernovae, yet they are rarely observed. New James Webb ...

On this day in science history Sept. 17, 1999: Jesse Gelsinger died after receiving a gene therapy treatment to treat a liver ...