-
earth center/ geocentric. Wrong. Greek. astronome
-
-
sun center system.book published deathbed
-
earth center.position stars. planetary motion
-
The telescope was invented by Hans Lippershey
-
elliptical orbit. sun centered. planetary motion
-
Galileo 1633
supported heliocentric. improved telescope. compass thermometer -
laws of motion. principle of gravity.
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.