Interstellar objects 'Oumuamua and Borisov studied by European observatories
Description
The European Southern Observatory used many of its telescopes to study 1I/'Oumuamua and 2I/Borisov, the first interstellar objects humanity has discovered flying through our solar system. -- Why Was 'Oumuamua So Weird? New Research Tries to Track Its Origins:(https://www.space.com/interstellar-object-oumuamua-origins-explored.html)
Strange ingredient in interstellar Comet Borisov offers a clue to its origins (https://www.space.com/interstellar-comet-2i-borisov-strange-composition-discovery.html)
Credit: ESO
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