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Oumuamua (11/2017 U1) First Interstellar Asteroid
In October 2017, an object was observed moving rapidly through the Solar System
It appears to be a dark, reddish, highly-elongated rocky or high-metal-content object
Astronomers calculated it is around 800 metres long and has a mean radius of around 104 metres
The orbit calculations revealed it did not originate from inside the Solar System
Oumuamua is the first interstellar asteroid