Piotr Guzik

Obserwatorium Astronomiczne Uniwersytetu Jagiellońskiego

Sesja III: Układy planetarne i małe ciała (wykład zaproszony)

Wtorek 12.09.2023 11:00 – 11:30

abstrakt:
Comets and asteroids, collectively known as minor bodies, brought water and organic compounds to the Earth shortly after it had formed, significantly contributing to the emergence of life on our planet. We have been investigating them for centuries, and now more than a million asteroids and a few thousand comets are cataloged. All of them, except two, are believed to be the leftovers of the solar system formation. The two remaining are recently identified interstellar minor bodies that were thrown away from other planetary systems and incidentally flashed through the solar system. Though only two are known to date, more are expected to be discovered soon thanks to the advancements of automatic sky surveys. As the samples of the matter from alien planetary systems, they give us a unique opportunity to study the remote worlds from close with the methods that we use to study our native minor bodies. Thus they are natural bridges between our solar system and other planetary systems. In this talk, I will give a background about what we know (and don’t know) about the two interstellar visitors 1I/’Oumuamua and 2I/Borisov.