Scientists In the last few years have studied the first observed interstellar visitors to our solar system. They include a comet called 2I/Borisov, spotted in 2019 and still passing through, and an asteroid called 'Oumuamua that zipped through quickly in 2017.
원문출처 : https://www.cnn.com/2020/04/26/world/alien-asteroids-solar-system-scn-trnd/index.html
원문출처 : https://www.cnn.com/2020/04/26/world/alien-asteroids-solar-system-scn-trnd/index.html