Astronomy: study objects

Hello

Astronomy for me means the study of the universe in general, ie the investigation of stars, planets, stars and meteorites. Also the interaction between these and their relationship with space.
This discipline seems interesting because it somehow explains the existence of life and one has the knowledge of what is happening in space at this time and what could happen in the future.
It has always been present in us how life was created, some say it was a supreme being called God, others attribute it to science with the explosion of the "Big Bang", then from very small that has been present in me this eternal question mark.
The knowledge I have about it are basic. These are the number of planets that exist, that revolve around the sun and depending on the distance that exists with the time varies in turning. NASA is currently testing the existence of life in other plants, and the closest possibility is Mars. Fact would only be verified if there is water on the planet. This cost a lot to check since the distance with the planet is considerable and this entails several complications to install a machine in that zone.
Well let's hope that they will come to concrete results because it would be entertaining to know what is going on around our planet.
Waiting for them to be well, greets you.
Ignacio