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Johannes Kepler was a fellow astronomer in the early 1600's, and is well known for his discovery. Johannes Kepler discovered the three laws of planetary motion that bear his name published in 1609 and 1619.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.