Andromeda
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Stellar stream

Tri Pis

Open in Ouranos

A river of stars — what is left of a cluster or small galaxy the Milky Way pulled apart.

Measured

Distance
about 84,589 light-years

How far, from the Sun

About 84,600 light-years. To cross it:

  • Light84,600 years
  • Voyager 1's speed1.5 billion years
  • Driving at 100 km/h913 billion years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • About 20,000 light-years long, 85,000 light-years away on average.
  • Traced by Bonaca2012, Martin2013.

Where this comes from

  • Stellar streams: galstreams (Mateu 2023, MNRAS 520, 5225), Copyright (c) 2017, Cecilia Mateu, BSD 3-Clause licence, and the papers each track comes from.

Every catalogue Ouranos draws is credited on the credits page.