Memory SSU - Solar System UnitVersion en ligne VOCAB par Marvin Miller Earth Round like the planets, Orbit a planet not the sun, some planets have no moons, Some planets have lots of moons 4th planet from the sun. Hard rocky surface. Red dirt. Huge, powerful dust storms. Planet closest to sun. Hard Rocky surface. No atmosphere. No weather Center of our galaxy. Planets orbit the sun. Very strong gravitational pull, 98% of matter in the galaxy SUN Venus 3rd planet from the sun. 75% covered with water. Oxygen in atmosphere Moon Mercury Mars 2nd planet from the sun. Hard rocky surface. Covered with poisonous gas. Brightest planet, Hottest planet Dwarf planet. Used to be 9th planet from sun. Uranus 7th planet from the sun. Huge ball of gas. Mainly frozen. Tilted. Spins on its side. Large group of ice, dust, and rocks, orbit the sun, have tail made of gas Comet Jupiter Neptune Asteroid Pluto Meteor Large chunk of rock or metal, orbits around the sun. Lumpy, not round. Tumble as they orbit. Saturn 8th planet from the sun, Huge ball of gas. Almost competely frozen. Spins very slowly 6th planet. Lightest planet. Rings made of rocks and ice. Huge ball of gas, solid core. 5th planet from the sun. Largest planet. Huge ball of gas. Solid core. Large red spot is a big storm Smaller chunks of rock that have broken off a asteroid or comet. Can get pulled into a plane'ts orbit. burn up when enter Earths Atmosphere. Falling star