It is a large celestial body that is composed of gas and emits light.
Star
It is a large collection of stars, gas, planets and dust.
Galaxy
It is the word that scientists use to describe space and all of the energy and matter in it.
Universe
How many planets are there in our Solar System?
8
It is a collection of large and small bodies that orbit our central star, the sun.
The Solar System
It is a spherical body that orbits the sun and it doesn`t have its own light.
Planet
We live in this planet.
Earth.
It is a small celestial body composed of rock and metal.
Asteroid
The path of a celestial body in its revolution about another.
orbit
A person trained to travel in a spacecraft.
Astronaut
The galaxy containing the solar system.
Milky way
A person who studies scientific things and makes new experiments.
Scientist
It is the science that studies everything in space.
Astronomy
This persons uses telescopes to learn about the universe.
Astronomer
This planet is the closest one to the sun. It`s extreme hot by day and freezing at night.
Mercury
It`s the red planet. It has giant volcanoes.
Mars
