6 Lessons
1. Planets
The Sun, stars, Planets, orbit, closest and farthest from the sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, inner and outer planets, moons, asteroids
The order from smallest to largest is Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter. Earth is the largest of the rocky inner planets.
Dwarf Planets, Ceres, telescope, The Hubble Space Telescope, Space probes , Phoenix Mars Lander, scientific instruments, Mars Exploration Rover,