Revised by Claire Anne Baird

Planet. An object in orbit around a star but does not give off its own light,. Rather it shines by reflecting sunlight

Neptune Jupiter Uranus Mars Mercury Pluto Earth Saturn Venus

Inner Planets are called inner planets because they orbit close to the sun. These planets are:  Mercury Venus  Earth  Mars

Outer Planets are called outer planets because they orbit far from the sun. These planets are called:  Jupiter  Saturn Pluto  Uranus  Neptune

One rotation takes 10.7 hours. One year is 29.5 Earth years. It has at least 17 moons and many rings.It has at least 17 moons and many rings. Saturn is the sixth planet from the sun and the second gas planet.Saturn is the sixth planet from the sun and the second gas planet. Saturn’s rings are made of ice, rock, and dust.Saturn’s rings are made of ice, rock, and dust. Click here to learn more about Saturn.

One rotation takes 243 days. One year is days. It has no moon or rings. Venus is the second planet from the sun. It is as dry as a desert and hotter than an oven.. Click here to learn more about Venus.

One rotation takes 16 hours. One year is 165 earth years. It has 8 moons and 4 rings. It is the eighth planet from the sun and the last gas planet. Neptune is blue-green. Click here to learn more about Neptune.

One rotation takes 6 days. One year is 248 earth years. It has 1 moon and no rings. It is the ninth, and last planet from the sun, but every 248 years Neptune orbits farther than Pluto. Charon is Pluto’s moon. Click here to learn more about Pluto.

One rotation takes 17 hours. One year is 84 earth years. It has at least 15 moons and 10 rings. Uranus is the seventh planet from the sun and the third gas planet. Uranus seems to rotate on its side. Click here to learn more about Uranus.

One rotation takes 59 days. One year is 88 days. It has no moon or rings. Mercury is the closest planet to the sun. It looks a lot like our moon. Click here to learn about Mercury.

One rotation takes 9.8 hours. One year is 12 earth years. It has at least 16 moons and 2 rings. It is the fifth planet from the sun and the first gas planet. It has a great red spot of swirling gas. Click here to learn more about Jupiter.

One rotation takes 24 hours. One year is 365 1/4 days. It has 1 moon and no rings. It is the third planet from the sun. Earth is mostly covered with water. Click here to learn more about Earth.

One rotation takes 24.5 hours. One year is 687 days. It has 2 moons and no rings. It is the fourth planet from the sun and the last of the inner planets. Mars looks red because of rusty iron in its soil and red dust in its air. Click here to learn more about Mars.

Milky Way Galaxy General structure of the Milky Way Galaxy. The Milky Way Galaxy consists of a thin disk about 100,000 light-years in diameter with a central bulge. The spherical region surrounding the entire disk is called the halo. Where is the Sun located within our galaxy? The Sun is located in the disk, about 28,000 light years from the galactic center.

Moons of the Planets

SUN 75% hydrogen and 25% helium by mass Sun converts hydrogen to helium in its core Differential rotation equator the surface rotates once every 25.4 days near the poles it's as much as 36 days Core conditions temperature is 15.6 million Kelvin pressure is 250 billion atmospheres

Asteroids are sometimes called minor planets because they are made up Of rocks and metal. The rocks come in many sizes. Larger rocks are Asteroids. They are found in large areas between the orbits of Mars And Jupiter. (Called the Asteroid Belt)

Meteoroids and Meteorite Meteoroids are loose dust particles that come from Comeroid. Most are Very small. When it enters Earth’s atmosphere it forms a bright light, a shooting star. Most meteoroids break up in the Earth’s atmosphere. When they break up it is called a meteorite.

Review SunSun - The Sun is a star at the center of our Solar System. Mercury - Mercury is the planet closest to the Sun.Mercury VenusVenus - Venus is the second planet from the Sun. It is the hottest planet. EarthEarth - Earth is the third planet from the Sun and the planet we live on. MarsMars - Mars is a red planet and the fourth planet from the Sun. JupiterJupiter - Jupiter is the fifth planet from the Sun. This gas giant is the largest planet. Saturn - Saturn is the sixth planet from the Sun. This gas giant has large, beautiful rings.Saturn UranusUranus - Uranus is a gas giant and is the seventh planet from the Sun. NeptuneNeptune - Neptune is a gas giant and is usually the eighth planet from the Sun. PlutoPluto - Pluto is a rocky planet that is usually the farthest planet from the Sun. It is the smallest planet.