The+inner+Planets


 * === This planet is one of the four inner planet. ===
 * === Mercury is the smallest terrestrial planet and the planet close to the sun. ===
 * === Mercury's mass is so small that gravity it gravity is very weak. ===
 * === During the day, the side facing the sun reaches temperature of 430ºc. ===


 * =Venus density and internal structure are similar to Earth's. But, in other ways, Venus and Earth are very different=
 * =The tripping of heat by the atmosphere is called greenhouse effect.=
 * =Venus rotate from east to west in a opposite way of almost all the moons and planets.=
 * =Venus's surface has manny volcanoes and broad plains formed by lava flows.=
 * =The clouds are made mostly of droplets of sulfuric acid.=