Because they put a microscopic camera that could zoom in and saw things :)
it was found in 1676
No. Though traces of water has been found, Mars is incapable of sustaining life.
yes and no not many humans have been on mars okay thanks from mars
Try the google.com search engine. You can also ask us specific questions about Mars if you like. And there are books about Mars that can be found in public libraries.
information about Mars?
There is currently no known population on Mars as it is uninhabited by humans. Various space agencies and private companies are working towards sending humans to Mars in the future, but no humans have reached Mars yet.
Humans have never lived on Mars and if we will it will take a while before we are advanced enough to do it.
No. But rovers have.
Mars is the planet that is least unlikely to be visited by humans
No, humans have not traveled to Mars yet. Only robotic spacecraft have been sent to explore Mars, such as the Mars rovers and orbiters. The first crewed mission to Mars is currently planned for the mid-2030s by NASA.
No
There are no such facilities at the moment as travelling to Mars will take a long time and there is still insufficient information of Mars, e.g. the atmospheric conditions, therefore we would not want to take the risk to transport the materials to Mars now. These facilities may appear in the future, where space exploration becomes safer and there is enough reliable information of Mars to determine whether humans are able to survive on the red planet.