
StarTalk @StarTalkRadio
#OTD 3/29/1807: German astronomer Heinrich Olbers discovered Vesta, the 2nd largest object in asteroid belt. Because it's only "nearly spherical", it's only "almost" a dwarf planet, yet accounts for about 10% of entire mass in known asteroid belt: https://t.co/M9Z9qN24Qx https://t.co/hgcNxfSLNn — PolitiTweet.org