1. Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)
   - Oort

Type of: astronomer, stargazer, uranologist

• querulousness
• query
• query language
• quesadilla
• quest
• quest after
• quest for
• quester
• question
• question mark
• question master
• question of fact
• question of law
• question sheet
• question time
• questionable
• questionably
• questionary
• questioner
• questioning
• questioningly
• questionnaire
• quetch
• quetzal
• quetzal bird