2. What is the Solar System?
It is our Sun and everything that travels around it.
Our solar system is elliptical in shape.That means it
is shaped like an egg.
3. The Sun is in the center of the solar system.
Our solar system is always in motion. Eight
known planets and their moons, along
with comets, asteroids, and other space
objects orbit the Sun.
4. The Sun is the biggest object
in our solar system. It contains
more than 99% of the solar
system's mass. Astronomers t
hink the solar system is more
than 4 billion years old.
5. The Sun is our closest star. It is a
member of the Milky Way galaxy.
The Sun is a yellow dwarf star,
which means it is a medium size
star. It is believed to be over 4
billion years old.The Sun spins
slowly on its axis as
it revolves around the galaxy.
6. The Moon
The Moon is like a desert with plains,
mountains, and valleys. It also has
many craters, which are holes created
when space objects hit the Moon's
surface at a high speed.There is no air to
breathe on the Moon.
7. Meteroids
A meteoroid is a piece of stone-like or
metal-like debris which travels in outer
space. Most meteoroids are no bigger
than a pebble. Large meteoroids are
believed to come from the asteroid belt.
Some of the smaller meteoroids may have
come from the Moon or Mars.
8. If a meteoroid falls into the
Earth's atmosphere, it will begin
to heat up and start to glow.This
is called a meteor. If you have
ever seen a "falling star", you
were actually seeing a meteor
9. The Planets and Dwarf
Planets
A planet is a large space object
which revolves around a star. It
also reflects that star's light. Eight planets
have been discovered in our solar system.
Mercury,Venus, Earth, and Mars are the
planets closest to the Sun.They are called the
inner planets
10. The inner planets are made up
mostly of rock.The outer
planets are Jupiter, Saturn,
Uranus, and Neptune. Jupiter,
Saturn, Uranus, and Neptune
are large balls of gases with
rings around them.All eight
planets travel around the Sun
in a different orbit. In its orbit,
there are not many other
objects like the planet