3 explanations for ‘Oumuamua that aren’t alien spaceships

The first known interstellar visitor to the solar system is keeping astronomers guessing.Ever since it was spotted in October 2017, major mysteries have dogged the object, known as ‘Oumuamua (SN Online: 10/27/17). Astronomers don’t know where it came from in the galaxy. And they’ve disagreed over whether ‘Oumuamua is an