SOLAR
SYSTEM
The Sun together
with the nine planets, asteroids, comets and meteors that orbit the sun.
Here is a way to remember the order of the planets.
My, Very, Educated,
Mother, Just,
Served, Us,
Nine, Pizzas -
Mercury, Venus,
Earth, Mars, Jupiter,
Saturn, Uranus,
Neptune, Pluto.
1.
Our Sun and everything that travels around it.
2.
Elliptical in shape.
3.
Sun is in the center of the solar system.
4.
Nine known planets and their moons, along with
comets, asteroids, and other space objects orbit the Sun.
5.
Solar system always in motion.
6.
Sun is biggest object in solar system, containing
more than 99% of system's mass.
7.
Sun exerts tremendous gravitational pull on
planets, satellites, asteroids, comets and meteoroids.
8.
Astronomers think solar system is more than 4
billion years old.
9.
Differing beliefs about how system formed.
Some believe whole solar system formed from a single, flat cloud of gas.
10.
Others believe formed when huge object passed near
Sun, pulling a stream of gas off of it with the planets then forming from this
gas stream.