Best thinking dictates that it may, conservatively, take at least seven years to really get to know someone. Seven's a good number, generally. Don't ask me why. Seven years later, what can we make of our first confirmed interstellar visitor? Is my step mother an alien? I guess not, on the strength of this …
In 2017, astronomers identified the first known interstellar object to have entered our solar system, now commonly known as ʻOumuamua. A relatively small body, estimated to be roughly the size of a skyscraper, ʻOumuamua transfixed scientists with its peculiar properties and inspired endless ‘it must be aliens’ takes from a fascinated public – and at least one Harvard astrophysicist.
