Spaceship Earth
Week 7: Gravity (Early/Mid-February)
Why the Earth is round. Newton's apple. Why the Earth does not fall into the Sun. Three minutes more Sun every day. Sundials and the Earth's axis. Comets.
Why the Earth is round. Newton's apple. Why the Earth does not fall into the Sun. Three minutes more Sun every day. Sundials and the Earth's axis. Comets.