Question: What astronomical feature did Petrus Plancius first observe?
Answers:
answer_text: Musca
answer_text: Phoenix
answer_text: Chamaeleon
answer_text: Hydrus
answer_text: Triangulum Australe
answer_text: Volans
answer_text: Grus
answer_text: Pavo
answer_text: Camelopardalis
answer_text: Dorado
answer_text: Columba
answer_text: Tucana
answer_text: Indus