1 gen 1859 anni - Pseudo-Planet (1859) Urbain Le Verrier observed the strange orbit of Mercury. He proposed that a planet called "Vulcan" must exist, and would account for the oddities of Mercury's orbit. No such planet would ever be observed, but rather Einstein's theories would later explain the observations.
Aggiunto al nastro di tempo:
Data:
1 gen 1859 anni
Adesso
~ 165 years ago
