21 internet investigations on our solar system. Students investigate the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. And, students investigate the dwarf planets Pluto, Ceres, Charon, Makemake, Eris, Haumea. And, students investigate the Sun, our Moon, asteroids, comets, our solar system, our Galaxy (the Milky Way), and our Universe. Students search the internet for facts about a planet’s size, its distance from the sun, how long it takes it to go around the sun,