Andromeda Galaxy

Galaxy

The nearest large spiral galaxy to the Milky Way, on a slow collision course with it.

Facts

TypeGalaxy
Galaxy typeSpiral
Distance from Earth2,540,000 ly
Diameter1,436,690,000,000,000,000 km
Mass3.00 × 10^42 kg
Apparent magnitude3.44
Redshift-0.001
HemisphereNorthern
Discovered964

Andromeda Galaxy in context

At 1,436,690,000,000,000,000 km across, Andromeda Galaxy is 112,752,315,178,151 times the diameter of Earth.

Its mass is 1,508,295,625,943 times the mass of the Sun.

The light reaching us from Andromeda Galaxy tonight left it around 2,537,000 years ago.

It has been on record since the year 964.

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