1. The study of planets, planetary systems and the solar system
   - planetology

Encyclopedia: Planetary science

• muggle
• muggy
• mugho pine
• Mugil
• Mugil cephalus
• Mugil curema
• Mugil liza
• Mugilidae
• Mugiloidea
• mugo pine
• mugshot
• mugwort
• mugwump
• Muhammad
• Muhammad Ali
• Muhammad Ali Jinnah
• Muhammadan
• Muhammadan calendar
• Muhammadanism
• Muhammedan
• Muharram
• Muharrum
• Muhlenbergia
• Muhlenbergia schreberi
• Muir