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

• Hanseatic League
• hansel
• Hansen's disease
• hansom
• hansom cab
• Hanukah
• Hanukkah
• hanuman
• hao
• haoma
• hap
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• haphazard
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• haphazardness
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• hapless
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• haplo-
• haploid
• haploidic
• haploidy
• haplology
• Haplopappus