The Inner Planets Mercury Venus Earth Mars. Four closest planets to the sun All have rocky surfaces Known as terrestrial planets.

The Inner Planets

MercuryVenusEarthMars

Four closest planets to the sunAll have rocky surfacesKnown as terrestrial planets

Mercury

3.2 Light Minutes from Sun4,879 km DiameterAlmost no atmosphere-173 to 427 C degree surface

temperature

Venus

6.0 Light Minutes from SunKnown as Earth’s Twin12,104 km diameterRetrograde RotationVery dense atmosphere464 C degree surface temperature

Earth

8.3 Light Minutes from the Sun12,756 km diameterWater on SurfaceLivable Atmosphere-13 to 37 C degree surface

temperature

Mars

12.7 Light Minutes from Sun 6,794 km diameter -123 to 37 C degree surface temperature Huge Volcanoes and Mountain Ranges Polar Ice Caps Very thin atmosphere