Andromeda
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Supernova remnant in Andromeda

SNR 25

Open in Ouranos

What is left of a white dwarf that exploded.

Measured

Distance
about 2.48 million light-years

How far, from the Sun

About 2.48 million light-years. To cross it:

  • Light2.48 million years
  • Voyager 1's speed44 billion years
  • Driving at 100 km/h26.7 trillion years

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

Facts

  • About 160 light-years across.

Where this comes from

  • Lee & Lee 2014, ApJ 786, 130

Every catalogue Ouranos draws is credited on the credits page.