Breakthrough Listen observed Oumuamua with a radio telescope and released its data to the public. Oumuamua was radio silent.
Oumuamua is a natural, not made object.
Oumuamua could be a binary contact asteroid.
Oumuamua might be left over from a star that died.
How common and where do interstellar 'roids like Oumuamua come from?
Can we backtrack Oumuamua to its origin?
Oumuamua appears to have a carbon rich crust.