An artist's concept of interstellar asteroid 1I/2017 U1 ('Oumuamua) as it passed through the solar system after its discovery in October 2017. Observations of 'Oumuamua indicate that it must be very elongated because of its dramatic variations in brightne
Credit: European Southern Observatory / M. Kornmesser
In November 2017, scientists pointed NASA's Spitzer Space Telescope toward the object known as 'Oumuamua,' the first known interstellar object to visit our solar system.
From Jet Propulsion Laboratory/NASA
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