The Inner Planets
The terrestrial planets 1.Mercury 2. Venus 3. Earth 4.Mars
Similarities 1) Rocky planets with Iron cores
2) Have impact craters from Meteors & Asteroids
Mercury 88 earth days = 1 mercury year No moons Explored by “Mariner 10 “ in the 70’s
Venus 225 earth days = 1 venus year Rotates backwards No moons Dense atmosphere Runaway “greenhouse effect” Explored by Magellan orbiter in the 90’s
Earth Only Planet known to have liquid water
Mars 687 earth days = 1 Mars year 2 moons Olympus Mons largest volcano in solar system Explored by Viking 1 and 2 & the Rover Missions