In the Solar Sistem there are eight planets:

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

aliens can exist. scientists are investigating this topic.

black holes act like a vacuum cleaner that take you to another galaxy

The main satellites of the planets of our galaxy are these:

A meteorite reaches the surface of a planet due to the fact that it does not disintegrate completely in the atmosphere. The luminosity left on having disintegrated is named a meteor.

THE END Names: Àlex Grau López Marc Ribes Ortolá Jan Gómez Montes Ignasi Gomez Roca