Artist’s concept of interstellar object1I/2017 U1 (‘Oumuamua) as it passed through the solar system after its discovery in October 2017. The aspect ratio of up to 10:1 is unlike that of any object seen in our own solar system. Image Credit: European Southern Observatory / M. Kornmesser (from NASA, https://solarsystem.nasa.gov/asteroids-comets-and-meteors/comets/oumuamua/in-depth/)
