15 gen 2005 anni - Demote Pluto
Descrizione:
Neil Tyson joins with a group of scientist in leading a campaign to demote Pluto to a dwarf planet. Though it was a controversial issue, he explained how it failed to meet the qualifications of a planet. The next year in 2006, the Internation Astronomical Union reclassified Pluto as a dwarf.Aggiunto al nastro di tempo:
Data:
15 gen 2005 anni
Adesso
~ 19 years ago
