The Planets in Our Solar System

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Mercury, Venus, Earth, Mars, Jupiter. Saturn, Uranus, Neptune, and Pluto are the nine planets in our solar system!

The solar system is made up of these nine planets and their moons. The system also includes all of the asteroids, meteors, and comets that revolve, or orbit, the Sun.

Can You Remember?

Would you like to be able to recite all of the planets in order from the Sun? It is easier than you think! Try using the pneumonic device below. A pneumonic device is a learning tool that can help you memorize important information. To create a pneumonic device, you take the first letter of each word in the series you are trying to memorize and create a funny phrase or saying with the letters. For Instance, a common pneumonic device used to memorize the planets is:

My Very Educated Mother Just Served Us Nine Pizzas

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto

Practice reciting the planets in order using the phrase above! Did it help?

Can you think of another pneumonic device to help you memorize the planets?

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto

There are two kinds of planets. Mercury, Venus. Earth, and Mars are in the inner solar system and are "terrestrial" planets, meaning they are rocky and dense. In the outer solar system, the planets Jupiter, Saturn, Uranus, and Neptune are made mostly of liquids and gases. These gaseous planets also have rings around them. Saturn has the largest, brightest rings around it. The rings are not solid. They are made up of chunks of rock and frozen materials.

Pluto, the outermost planet, is made mostly of ice and frozen gases and is the smallest of the planets. Even though it is called the outermost • satum and Its rings planet, it doesn't spend all of its time being the farthest planet from the Sun. Planets orbit in elliptical, round or oval, paths, and Pluto orbits for part of the time inside Neptune's orbit.

The chart below shows that each planet has its own personality.

PLANET FACTS

Planet

Color Seen

Diameter

Earth Time to Orbit Sun

From Earth

(Length of a Year)

Mercury

orange

3,031 miles

88 days

Venus

yellow

7,521 miles

225 days

Earth

blue & white

7,927 miles

365 days

Mars

red

4, IP7 miles

687 days

Jupiter

yellow

88,733 miles

12 Earth years

Saturn

yellow

74,600 miles

2q Earth years

Uranus

green

31,600 miles

84 Earth years

Neptune

yellow

30,200 miles

164.8 Earth years

Pluto

yellow

2,113 miles

241 Earth years

Unscramble the names of the nine planets In our solar system. Then write the names of the planets in ABC order.

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