Andromeda
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Stellar stream round Andromeda

Giant Stellar Stream

Open in Ouranos

Torn from a smaller galaxy; its far end lies about 100 kpc behind M31 (McConnachie et al. 2003) — depth here from the ≈20 kpc-per-degree gradient of Conn et al. 2016, starting at about M31's distance (about).

Measured

Distance
about 2.66 million light-years

How far, from the Sun

About 2.66 million light-years. To cross it:

  • Light2.66 million years
  • Voyager 1's speed47.3 billion years
  • Driving at 100 km/h28.7 trillion years

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

Where this comes from

  • McConnachie et al. 2018, ApJ 868, 55, Fig. 12 (outline, approximate); McConnachie et al. 2003 (MNRAS 343, 1335); Conn et al. 2016

Every catalogue Ouranos draws is credited on the credits page.