Mercury Mercury is the closets planet to the sun of all eight of the planets in the solar system. Mercury is the smallest of the planets, and it has the fastest orbit around the sun. Every 88 earth days mercury has orbited the sun. Surprisingly, mercury is the closest to the sun, and it is not the hottest. Since mercury is so hot humans would die before we even got to it. Astronauts are not sure if there is any life on Mercury, and are also not sure if there is any water. Mercury has no moons! Mercury is basically made out of rock.
Venus Venus is the second closest orbit from the sun. It orbits once every 222 earth days. This planet is named after Venus the roman goddess, of love and beauty. Venus is the second brightest natural object in space, apart from the moon. Venus' diameter is about 7,520 miles! Its has a iron core, and a molten rocky mantle, like earth's interior. Venus is very dry, it is like a huge desert. This planet is the 6th largest in the solar system. Venus and Earth are pretty much the same size. Venus is the hottest planets out of all of the planets.
Earth Earth is the only planet that humans can live on. This is only planet that is known to have life. Earth is the only planet with water. This planet is very similar in size to Venus. This has four parts of the interior, the crust, the mantle, the outer core, and the inner core. This one of the two planets that can support life. Earth has the third closest orbit to the sun. Earth has one natural satellite, the moon. Since earth has an Iron core it has a magnetic field. Earth has many different landforms.
Mars Mars is the only completely red planet. It is the fourth closest planet from the sun. Mars is the second smallest planet in our solar system. This planet is named after the roman god of war. Mars is the only planet in detail from earth. Mars looks red because it is very rusty. Mars’ diameter is 4,200 miles, just barley bigger than half of earth. One of its moons is moving closer and closer to mars! A hundred pound man would weigh about 40 lbs. Mars orbits the sun every 687 days.
Jupiter Jupiter is the biggest of all the planets! This is the 5 th closest planet from the sun. Jupiter is named after the king of all roman gods. Jupiter is large enough to contain 1,300 earths! If you weighed 100 pounds on earth you would be about 260 pounds. A day on Jupiter is only 10 hours long. But it takes 12 years to orbit the sun. Jupiter’s biggest moon Ganymede is bigger than mercury and Pluto. Jupiter has a ring. Jupiter's big red dot is a storm that has been going on for 300 years!
Saturn Saturn has more rings than any other planet. Saturn is the second largest planet, behind Jupiter. It’s diameter is about 75,000 miles almost 10 times bigger than earth. Saturn could float on water if there was a big enough ocean. Saturn is a giant ball of gas. Saturn has about 30 known natural satellites. Only one of Saturn's moons has atmosphere, that is Titan. Every 30 years Saturn has orbited the sun once. A 100 pound object, would weigh 115 pounds. Saturn can be seen with an unaided eye but it s rings cant. Saturn is the sixth closest orbit from the sun.
Uranus Uranus is the coldest planet of them all. This planet has a tilted rotation. Some of the nights in Uranus can last up to 40+ years! Uranus is the coldest planet in the solar system. It is named after the Greek god of the sky. It takes about 31,000 days to orbit the sun once. Uranus is the 7 th closet planet to the sun. Uranus was discovered in 1781. Uranus is 14 times bigger than Earth. Uranus has about 30 known natural satellites.
Neptune If you don’t include Pluto as a planet, then Neptune is the farthest planet away from the sun. Neptune takes about 165 years to orbit the sun once. Neptune is almost 4 times bigger than earth. Neptune is the stormiest planet, It can reach winds up 1,000+ mph. Neptune’s core is very rocky. Neptune has at least 8 moons. Earth is 30 times to the sun than Neptune. Neptune has its own heat source that is not the sun. It is named after the roman god of sea.
Pluto Pluto is not a planet anymore! From Pluto the sun would look like a bright star, since it is so far away. Pluto is still the farthest thing rotating the sun. Pluto is smaller than earths moon. Pluto is a bagge color. Pluto has 3 moons. Pluto has a big moon since it is over half the size of Pluto. Pluto was discovered in 1930. Sometimes Pluto is sometimes closer to the sun than Neptune, because of its irregular orbit. Some people believe Pluto was a moon of Neptune, that got away.
The Sun The sun has 8 planets and Pluto orbiting it. The sun is a average size star. The sun is a huge ball of fire, and gas. You would die before you even got to the sun, since it is so hot. The sun is just at its medium stage. It will hurt your eyes if you look at the sun. The Sun was a god of many religions back in the day. The sun is half way through its lifetime. More than 1 million earths would fit inside of the sun. In the suns core it is about 30 million degrees Fahrenheit!
Glossary Irregular= not normal Orbit= to go around something Natural Satellite= something that orbits a planet