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The 13 Planets By: Simon Freitag Mercury • Mercury has cracks showing that its hot core is growing cold and the planet is shrinking. • Mercury goes around the sun in 88 days, but spins on its axis so slowly it takes 176 days for the sun to rise and set! Also, on Mercury every day would be your birthday because it’s years are shorter than a day! That’s a lot of presents! The daytime side of Mercury is over 800 degrees, which could melt lead! No wonder it’s water is dried out, and night is under 300 degrees! Making it one of the hottest and coldest planets. Confusing, right?! Venus • Venus has a thick layer of 870 degree poison clouds that store 100 million volt lightning bolts • It is the hottest planet in the solar system and has an atmosphere so dense it could crush a submarine! (I think it is also the most dangerous planet). It also has winds that can blow over an astronaut, and it is the same size as Earth, but does not resemble it in any way! (Because if it did we would be on a very dangerous planet and we would not be here). Mars • Mars is a terrestrial planet sometimes also called the red planet. • Mars has a canyon named Valles Marinaris that stretches the length from New York to San Francisco! • The planet also has a volcano 17 miles high with ice caps and dust storms that cover the planet for months! The most interesting fact about Mars is that scientists have found that there may be water buried under its surface, which means there could have been life on this planet at one time, millions of years ago! Mars has so much carbon dioxide in its atmosphere, no thin liquid water can exist. Jupiter • Jupiter is the largest planet. It also has 63 moons! • Jupiter is a gas planet, meaning there is no solid surface to walk on. • Jupiter has a Giant Hurricane called the Great Big Spot, which is a HUGE hurricane with high winds and a lot of lightning! Jupiter's stripes are made of Ammonia Hydro Sulfide which smells like rotten eggs, and the clouds are made of ammonia which smells like strong window cleaner. (I think it’s probably the stinkiest planet). And also, Jupiter has rings too small to be seen from earth. Saturn • Saturn has enough density to float in water. • It’s rings are mostly made from dust particles, ice and boulders. Uranus • Uranus is 8 times as big as earth, and it is tilted 98 degrees on its side along with its rings. • Uranus has 42 years of night and day. • Uranus has 27 moons. Neptune • Neptune has 1,200 mph winds. • The planet is -350 degrees F., But its core is hotter than the sun’s surface. • Neptune was discovered 160 years ago, but it has not orbited the sun yet (So it’s really slow). Pluto • Pluto was demoted to a dwarf planet in 2006. • But it sometimes crosses Neptune’s orbit, which temporarily causes it to be the ninth planet again. You named a planet after little old me? Aw, shucks! Thank you for watching!!!!! Resource David A. Auglar, 13 Planets, National Geographic Society, 2011