Meteors, Meteorites, and Meteor Showers Meteor Terminology Meteoroids - interplanetary debris Meteor - Also called âshooting starâ When a meteorite has entered the atmosphere…

The Terrestrial Planets, Part I Mercury and Venus MERCURY The Winged Messenger Physical Data Diameter: 4,864 km (0.382 Dearth) Mass: 3.33x1026 g (0.0558 Mearth) Density:…

Small Bodies of the Solar System Pluto, Comets, Asteroids, Meteors and Zodiacal Light PLUTO God of the Underworld Pluto Physical Data Discovered by Clyde W. Tombaugh in 1930…

The Terrestrial Planets, Part I Mercury and Venus MERCURY The Winged Messenger Physical Data Diameter: 4,864 km (0.382 Dearth) Mass: 3.33x1026 g (0.0558 Mearth) Density:…

The Jovian Planets, Part III Uranus and Neptune URANUS The God of the Heavens Physical Data Discovered by William Herschel in 1781 Diameter: 51,118 km (4.01 Dearth) Mass:…

The Terrestrial Planets, Part III Mars MARS The God of War Physical Data Diameter: 6,794 km (0.531 Dearth) Mass: 6.40x1027 g (0.107 Mearth) Density: 3.96 g/cm3 Rotation Period:…