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