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What is the Universe?
All the matter and space that exists.
The galaxies are made of...
stars, planets and other astronomical obejcts.
How did the Universe start?
It started with an explosion called the Big Bang.
What did the Big Bang do?
It sent pieces of matter in different directions.
Galaxies are systems composed by...
They are galaxies composed by gas and thousands of millions of stars.
How many types of galaxies are there?
There are three: elliptical, spiral and irregular.
What´s the name of our galaxy?
The MIlky Way.
What kind of shape does the Milky Way have?
It´s spiral shaped.
What kind of astronomical objects are stars?
They are astronomical objects that produce heat and light.
Planets are astronomical objects that orbit...
a star.
Natural satellites are astronomical objects that orbit...
a planet.
What´s Planet Earth´s natural satellite?
The Moon.
What are asteroids?
Irregular-shaped rocks that orbit the Sun.
Can you explain the asteroids size?
They can be a few metres size or hundreds of km wide.
