Today I went to the Museum of Natural history.
I learned about the universe .
  In the universe, we can see the solar system.
In the solar system, there are 9 planets. 8 planets
There is Mercury, Venus, Earth, Mars, Jupiter, Saturn , Uranus, and Neptune.
The other planet was Pluto, some time ago people said that Pluto is a planet but now people say that Pluto is not a planet anymore because it is too small.
The important thing is that planets rotate on an axis and revolve around the sun.

Good work, remember there are only 8 planets...