16 feb 1925 anni - American astronomer Edwin Hubble
Descrizione:
proves conclusively that nebulae such as the Andromeda Nebula are much too distant to be part of the Milky Way and are in fact entire galaxies outside our own, thus settling the “Great Debate” about the nature of spiral nebulae and the size of the universe.Aggiunto al nastro di tempo:
Data:
16 feb 1925 anni
Adesso
~ 100 years ago