A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

While nearly all massive galaxies possess central black holes, the presence of such black holes in dwarf galaxies remains an open question, with previous estimates identifying them in only 0.5% of ...

Astronomers from the University of Tokyo in Japan and elsewhere have employed the James Webb Space Telescope (JWST) to ...

Astronomers have identified the largest known single spinning structure within the cosmic web, a filament approximately 117,000 light-years across and 5.5 million light-years long, situated 424 ...

WASHINGTON, Jan 30 (Reuters) - Observations by NASA's James Webb Space Telescope and Chandra X-ray Observatory are providing ...

Discover why astronomy and cosmology are the universe's mapmakers. Discover how scientists trace galaxies, the cosmic web, and the large-scale architecture of our entire existence in three dimensions ...

A potential new type of celestial object has all the makings of a normal small galaxy. It’s rich with the same hydrogen gas that births suns and planets, and it lies within a halo of dark matter, the ...

On the night of Oct. 5 to 6, 1923, Edwin Hubble discovered a new star — and revealed the utter vastness of the universe. Hubble was looking at the cosmos with the 100-inch Hooker telescope at the ...