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The Systems
By Shalonda L. Ragland
What are they?
They are planets that are made up of
gases. Did you know that any water on
Mars must be frozen?
Mars
In 1976, Mars was photographed by
Viking1 from 348,000 feet of film.
How can they help?
Planets can help us by with their gravity.
The gravity helps us when we walk.
Planet Sizes
Planets can be big or small.Some are
round. Some can have rings around
them like Saturn.
How Many?
Some planets have more than one
moon. They can have big moons or
small moons.
Star Shapes
Some stars can make cool shapes. For
example, the stars make up the Little
Dipper and the Big Dipper.
What is Neptune
Neptune is made up of gases. It has a
molten middle made up of hydrogen,
helium, ammonia, water, and a small
amount of methane.
Gravity
The solar system’s gravity holds the
planets in their orbits.
Neptune’s Size
Did you know that Neptune is the 3rd
biggest planet?
We need our system.
Did you know that without gravity we
would not be able to walk? Gravity
keeps us from floating.