Galaxy information

Milky Way

A barred spiral galaxy containing our Solar System and the confirmed exoplanets reviewed on this site.

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Observational image — source details pendingBarred spiral galaxy
ClassificationBarred spiral galaxy
DistanceCurrent home galaxy
DiameterAbout 100,000 light-years
Estimated starsAbout 100–400 billion stars
Other life probability74%
LocationLocal Group
Home regionOrion Spur
Known catalog worldsSolar System and confirmed exoplanets
StatusOpen for reviews

Life potential

How likely is other life somewhere in Milky Way?

The Milky Way already contains one confirmed life-bearing planet and enormous numbers of stars and planetary systems.

Editorial probability of other life74%
Highest local confidence

Why this score?

  • Earth proves that life can arise in this galaxy.
  • The galaxy contains an enormous number of stars and planets.
  • Many potentially habitable candidates in the catalog belong to the Milky Way.

This is an editorial estimate for additional life somewhere in the galaxy, not a census result.

Structure

The Milky Way is a barred spiral galaxy with a central bulge, a disk of spiral arms and a large halo of stars, gas and dark matter.

Our position

The Solar System sits in the Orion Spur, far from the central supermassive black hole and inside the galaxy's rotating disk.

Planet catalog

All confirmed exoplanets currently listed by Rate the Earth are in the Milky Way because no planets in other galaxies have yet been confirmed well enough for a detailed public catalog.

Image source details pending