🌌 Galaxy
Andromeda Galaxy
The nearest big galaxy, and one day it will merge with ours.
- Distance
- 2.5 million light-years away
- Size
- 150,000 light-years across
- Stars
- about 1 trillion
Did you know?
- On a dark night it is the farthest thing you can see with your own eyes.
- It is heading towards us and will collide with the Milky Way in about 4 to 5 billion years.
Photographed or visited by
GALEX
Ten years of the ultraviolet sky.
Planck
Took the sharpest picture of the oldest light there is.
Different kinds of lightSee it in 3 kinds of light
Compare Andromeda Galaxy with the Milky WaySide by side, to scale, in the app
More NASA photos of Andromeda GalaxyStraight from NASA’s image library, in the app
Explore more
All of deep space
The Sun
Our star, an ordinary one that keeps everything here alive.
Betelgeuse
A red supergiant in Orion that will one day explode.
Alpha Centauri
The closest star system to the Sun.
Eta Carinae
A pair of giant stars, one of them about 90 times heavier than the Sun.
Mira
A red giant star racing through space with a tail like a comet.
Zeta Ophiuchi
A runaway star, flung out when its partner exploded.