Transcript Solar System

Solar
System
The sun
• The sun’s mass is
99.8% of all the
mass in the solar
system.
• The sun is a ball
of glowing gas
that is about ¾
hydrogen and ¼
helium.
The Sun
• Although the Sun looks very large in our sky,
it is an average size star.
• There are many stars larger than the Sun,
but the Sun looks much bigger because it is
so much closer to Earth.
• The Sun is at the center of our solar system
and is the only star in our solar system.
How big is the Earth?
INNER PLANETS
• Small
• Rocky Surface
• Called
“Terrestrial”
Planets
• Solid
• No rings
• Short Revolution
OUTER PLANETS
• No solid surfaces
• Called “Gas
Giants”
• Might have partly
solid core
• Have lots of moons
and satellites
• Long revolution
• Have rings