The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...

Our universe is filled with galaxies, in all directions as far as our instruments can see. Some researchers estimate that ...

Interstellar Comet 3I/ATLAS makes its closest, safe approach to Earth on Dec. 19. Learn how this rare visitor reveals secrets ...

NASA's Nancy Grace Roman Space Telescope team has released detailed plans for a major survey that will reveal our home galaxy ...

Interstellar object 3I/ATLAS is baffling astronomers with its bizarre, sun-facing anti-tail, confirmed by Hubble.