When the Solar System was formed in a young star cluster a nearby star might have exploded in a supernova. The repercussions of such an event can be rather profound, and the current Solar system may still bear the memory of this traumatic event. The truncation of the Kuiper belt and the tilt of the ecliptic plane with respect to the Sun's rotation axis could be such signatures.
(Special date) The Troubled Puberty of the Solar System
Simon Portegies Zwart (Leiden Observatory)
Monday, November 27, 2017