1. German astronomer who first stated laws of planetary motion (1571-1630)
   - Kepler, Johannes Kepler

Type of: astronomer, stargazer, uranologist

• 1000000000
• 1000000000000
• 1000th
• 100th
• 101
• 101st
• 105
• 105th
• 10th
• 11
• 11 November
• 11-plus
• 110
• 110th
• 115
• 115th
• 11th
• 12
• 12-tone music
• 12-tone system
• 120
• 120th
• 125
• 125th
• 12th