📢🔭🪖🧊3️⃣/1️⃣3️⃣

#pluto discovery announcement #lowell observatory #dwarf planet #outer planets #march 13 1930 #clyde tombaugh

🔭☉️✨

#clyde tombaugh #dwarf planet #lowell observatory

🔭✨♇

#pluto discovery #clyde tombaugh #lowell observatory #astronomical discovery #telescope observation #planet x search #historical astronomy