On Oct. 13, 1773, Charles Messier spotted the Whirlpool Galaxy (M51) for the first time. Writing of it a few months later, he ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Travel back 390 million years after the big bang to the ancient Maisie's Galaxy in this stunning 3D visualization that ...

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 ...

JWST produced a sharper image of galaxy cluster Abell S1063 than Hubble. Abell S1063's gravity acts like a magnifying glass, showing us distant galaxies. The JWST image reveals many more early ...

Astronomers have discovered a ghostly, million-light-year-long bridge of stars connecting two massive galaxies within the Abell 3667 cluster, 700 million light-years away. This glowing thread of ...

The early universe is speckled with little red dots, and now we may have an idea of how these peculiar galaxies originated: They were born with almost no spin. Little red dots were totally unknown ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

James Webb and Hubble telescopes join forces to explore a cosmic nursery: Space photo of the week NASA unveils 9 stunning snapshots of the cosmos in X-ray vision: Space photo of the week James Webb ...

Astronomer Vera Rubin, now honored on a U.S. quarter, transformed our understanding of the universe by uncovering powerful evidence of dark matter. Her groundbreaking work revealed that most of the ...

In “Citizen Science in Astronomy (Part 7),” SETI Institute astronomers Dr. Franck Marchis and Dr. Lauren Sgro highlight two rare and compelling discoveries and the crucial role of citizen scientists ...