2006年8月24日：冥王星被降级

2006年8月24日，国际天文学联合会（IAU）通过投票将冥王星重新分类为矮行星。这一决定在当时引发了公众的广泛讨论与媒体的关注。

After much discussion and debate, an International Astronomical Union (IAU) vote on Aug. 24, 2006, reclassified Pluto as a dwarf planet. “Throw away the placemats. Grab a magic marker for the classroom charts. Take a pair of scissors to the solar system mobile,” crowed the New York Times coverage. While sentiment from the general public Continue reading "Aug. 24, 2006: Pluto is demoted" The post Aug. 24, 2006: Pluto is demoted appeared first on Astronomy Magazine .