OUR SOLAR SYSTEMBy Joey QuattriniOur solar system

includes 8 different planets.

The solar system is very, very big. You could say massive also.

The solar system has cold planets and warm planets.

The SunThe sun is the star

that keeps our planet warm and bright.

All the other planets orbit around the sun.

The sun will burn out in about 100 billion years.

Mercury

Mercury is the closest planet to the sun.

No human can live on Mercury because it is hot enough to melt lead.

Mercury is about the size of Earth’s moon.

Venus

Venus is about as big as Earth.

It is one of the brightest planets in the solar system.

Venus has volcanoes, mountains, and craters.

EarthEarth is the planet

we live on.Earth is the only

planet with life on it in our solar system.

It has more water than land.

Mars

Mars looks fiery red down on Earth.

Mars diameter is only half of Earth’s.

Mars may have had water on it’s surface.

Asteroid BeltThe asteroid belt

separates the inner planets from the outer planets.

It is made of lots of asteroids.

The asteroid belt is very big.

Jupiter Jupiter is the

largest planet in our solar system.

It has a diameter that is 11 times the diameter of Earth.

Jupiter has a giant storm on it.

SaturnSaturn has rings

that are visible from Earth with a telescope.

Saturn has 31 moons.

It has no solid surface.

Uranus Uranus is a gas

giant.It rotates on its side

as it orbits the sun.Uranus has at least

27 moons.

NeptuneNeptune has at

least 13 moons.It is one of the

windiest places in our solar system.

It’s atmosphere is mainly hydrogen and helium.

The Dwarf Planet PlutoPluto is farthest

from the sun.It is very, very cold

on Pluto.Pluto is called a

dwarf planet because it is too small to be a planet.

TelescopeTelescopes are used

to look at stars and planets.

You can’t see the surface of a planet though.

Telescopes can see very far in the sky.

UniverseThe universe is

everything that exists in space.

There are millions of galaxies in the universe.

There are also millions of stars.

Constellations Constellations are

pictures in the stars.

One constellation you might know is the big dipper.

Another one is the little dipper.

GalaxyGalaxies are

systems of stars, gas, and dust.

There are many galaxies in the universe.

Galaxies are huge.

OrbitEarth orbits around

the sun.All the other

planets orbit around the sun too.

It takes Earth 1 year to orbit around the sun.

RotateIt takes Earth 1 day

to rotate on it’s axis.

Rotate means to spin around.

Earth rotates to get night and day.

AxisEarth tilts on it’s

axis.That is why

seasons change.An axis is an

imaginary line that goes through both poles of the Earth.

Moon The moon is a small

planet like body that orbits the Earth.

The moon has many craters.

Some of the other planets have moons too.

StarA star is a huge ball

of superheated gases.

There are many stars in the solar system.

Stars make up constellations.

AsteroidAsteroids make up

the asteroid belt.Some asteroids hit

Earth.Some don’t hit

Earth.

Moon PhasesThe moon phases

are the shapes the moon seems to have.

One phase is the full moon.

Another phase is the new moon.

CometThere are many

comets.Comets are like

asteroids and meteors.

It looks like comets have a trail of light.

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