To Hubble's astonishment, he found this star, and others like it, were tremendously distant — and thus belonged to an entirely different galaxy separated from ours by a vast gulf of space.

Measuring a galaxy’s brightness or apparent size is not a good guide to its distance. Hubble leveraged a discovery made by Henrietta Swan Leavitt 10 years earlier. She worked at the Harvard ...

A cosmic bullseye has been recorded by NASA's Hubble Space Telescope! The “arrow”—a much smaller blue dwarf galaxy—shot through the center of the enormous galaxy LEDA 1313424, causing it ...

Hubble gazes ... show countless galaxies in faraway parts of the universe. Andromeda, however, is much closer and takes up more of the sky. It's just 2.5 million light-years distant, which is ...

Measuring a galaxy's brightness or apparent size is not a good guide to its distance. Hubble leveraged a discovery made by Henrietta Swan Leavitt 10 years earlier. She worked at the Harvard ...