Oumuamua is a first ever confirmed "interstellar object" to enter Solar system. It was detected by Hawaiian telescope PAN_STARRS2 on October 18, 2017 and was named "Oumuamua" which stands for "advance scout" in Hawaiian.

However, the brightness of Oumuamua faded so quickly, that it became apparent that it moves really fast (26 km/s) and thus will relatively soon leave the solar system never to return.

Andrew Cote and Tony Dunn have come up with a Project Lyra - exploring the possibility of meeting this strange visitor from space. The idea is to chase Oumuamua using a couple of hardcore gravity assists, first sending a spacecraft to Jupiter, causing it to drop to the Sun for an Oberth maneuver.