Solar System By: Cameron Manoguerra December 13, 2013 >_< :)
Our Solar System Our solar system is in the galaxy of Milky Way. Our solar system has 8 planets. Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Our solar system was formed about 4.6 billion years ago. The planets in our solar system revolve around a star we call the sun.
The Sun • The sun contains 99.8 percent of our solar system's mass. • At the equator, the sun spins around once about every 25 days. • At its poles (North and South Pole) the sun rotates once on its axis every 36 Earth days. • The sun is a star which doesn’t have a solid surface, but is a ball of gas. • The temperature at the sun's core is about 27 million degrees Fahrenheit.
Mercury • Mercury is the smallest planet in our solar system. • It is the closest planet to the sun, about 36 million miles. • Mercury has no moons. • Mercury is only slightly larger than the Earth's moon. • While standing on Mercury at its closest point to the sun, the sun would appear more than three times larger than it does on Earth.
Venus • Venus spins backwards when compared to the other planets. • The sun rises in the west and sets in the east on Venus. • Venus has no moons. • More than 40 spacecraft have explored Venus. • One day on Venus lasts as long as 243 days on Earth.
Earth • Earth is the perfect place for life. • Many planets have atmospheres, but only Earth's atmosphere is able to be breathed in. • Earth has one moon. • Earth makes a complete orbit around the sun in about 365 days, or a year. • Another name for a moon is a satellite.
Mars • Mars is the fourth planet from the sun at a distance of about 142 million miles. • Mars makes a complete orbit around the sun in 687 Earth days. • One day on Mars takes just a little over 24 hours. • Mars is known as the Red Planet. • Mars has two moons named Phobos and Deimos.
Jupiter • It is predicted that Jupiter has an inner, solid core about the size of the Earth. • One day on Jupiter takes about 10 hours. • If the sun were as tall as a typical front door, Jupiter would be about as big as a basketball. • Jupiter has total of 67 moons. • Jupiter's moons have oceans underneath their crusts that might support life.
Saturn • Saturn has the most spectacular ring system of all our solar system's planets. • Saturn has 62 moons in total. • Saturn is at a distance of about 886 million miles. • Saturn is a gas-giant planet and does not have a solid surface. • Five missions have been sent to Saturn.
Uranus • Unlike any of the other planets, Uranus rotates on its side, which means it spins horizontally. • Uranus has 27 moons, which Uranus’s moons are named after characters from William Shakespeare’s and Alexander Pope’s plays. • Uranus cannot support life as we know it. • One day on Uranus takes about 17 hours. • Uranus’s inner rings are narrow and dark and the outer rings are brightly colored.
Neptune • Neptune has six rings. • Neptune is mostly made of a very thick, and hot combination of water. • Neptune’s moon are named after gods and nymphs in Greek mythology. • One day on Neptune takes about 16 hours. • Dwarf planet Pluto is actually closer to the sun and us, than Neptune.
Dwarf Planets • Dwarf planets cannot support life as we know it. • Dwarf planets are solid rocky/icy bodies. • Pluto was considered a planet until 2006. • Days and years vary on dwarf planets, for example one day on Ceres takes about nine hours. • Dwarf planet Ceres is in the main asteroid belt between Mars and Jupiter.
Comets • Comets may not be able to support life themselves, but they may have brought water and organic materials. • One day on comet Halley varies between 2.2 to 7.4 Earth days. • Comets do not have moons. • Comets are balls of frozen gases, rock and dust. • A comet warms up as it nears the sun and develops an atmosphere, or coma.
Asteroids • Asteroids do not have atmospheres. • More than 150 asteroids are known to have a small moon. • Asteroids do not have rings. • More than 10 spacecraft have explored asteroids. • If all of the asteroids were combined into a ball, they would still be much smaller than Earth's moon.
Meteorites & Meteors • Meteorites may vary in size from tiny grains to large boulders. • Meteoroids, meteors and meteorites cannot support life. • Many of the meteor showers are used with comets. • Meteoroids, meteors and meteoritesmay have provided the Earth with a source of amino acids. • Most meteorites are either iron, stony or stony-iron.
Belts & Clouds • Some dwarf planets within the Kuiper Belt have thin atmospheres. • The Kuiper Belt and the Oort Cloud surround our sun. • The Oort Cloud is a spherical shell. • Neither region of space is capable of supporting life as we know it. • Both the Kuiper Belt and the Oort Cloud are named for the astronomers who predicted they existed during the 1950s.
Cite Page • http://solarsystem.nasa.gov7/planets/index.cfm