15 ene 2005 año - Demote Pluto
Descripción:
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.Añadido al timeline:
fecha:
15 ene 2005 año
Ahora mismo
~ 20 years ago