
Oumuamua likely traveled through space for millions of years before its “chance encounter” with our star system.

The relative size of 'Oumuamua, the first extra-solar asteroid discovered. #ScaleOfThings Original images: M. Kornmesser/ESO, Daniel Schwen https://t.co/3tbN5asEyd pic.twitter.com/w5IakKR7U0
— Patrick Treuthardt, Ph.D. (@PTreuthardt) November 22, 2017
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