Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped object roughly the angular size of the full moon. What backyard observers ...

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On ...

This image from Hubble showcases the stars in Andromeda’s giant stellar stream. About a third of the...[+] stars are young: about 6-8 billion years of age, compared to the more typical 11-13 ...

Hubble and Curtis hypothesized Andromeda was its own “island universe,” a self-contained system of stars, much like our own Milky Way. At the time, this was an outrageous idea, and was met ...

Hubble's sharp imaging capabilities can resolve more than 200 million stars in the Andromeda galaxy, detecting only stars brighter than our Sun. They look like grains of sand across the beach. But ...

NASA has released a stunning panoramic mosaic of our closest galactic neighbor, the Andromeda Galaxy. The image was captured by NASA's flagship Hubble Space Telescope, and features an impressive ...

A Hubble Space Telescope study takes a close look at the dwarf galaxies surrounding Andromeda. Credit: NASA / ESA / J. Dalcanton / B.F. Williams / L.C. Johnson / PHAT team / R. Gendler Surrounding ...

Researchers using the Hubble Space Telescope have mapped out the enormous halo of gas around the nearest major galaxy to us, the Andromeda Galaxy. Skip to main content. Menu ...

The Hubble Space Telescope used quasars to make the most precise map of a galactic halo ever and realized that the Andromeda galaxy's influence stretches into that of our own Milky Way.

On Oct. 4, 1923, astronomer Edwin Hubble trained his telescope onto the sky and snapped a photo of a speck of light within the cloudy M31, also known as the Andromeda galaxy.. Hubble initially thought ...