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 ...

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 ...

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 ...

“For example, Chandra’s X-rays reveal the high-energy radiation around the supermassive black hole at the center of M31 as ...

A panoramic view of the neighboring Andromeda galaxy, located 2.5 million light-years away, requiring over 600 Hubble overlapping snapshots to stitch together.

Hubble, with its sharp imaging capabilities, detected more than 200 million stars in the Andromeda galaxy that are brighter than Earth's sun. But astronomers estimate the total population of stars ...

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 ...

Andromeda, officially known as Messier 31, or M31, is located about 2.5 million light-years away from the Milky Way — which would make it our closest fellow spiral galaxy.

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.

Scientists using NASA’s Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda Galaxy (M31), our nearest massive galactic neighbor, is about six times ...