I have seen lots of movies about people on Mars, but how much do we actually know about whats on or what was on it like

Question: I have seen lots of movies about people on Mars, but how much do we actually know about whats on or what was on it like water, rocks and maybe even other living things?????
- Keywords:
  Mars,
  movie,
  rock,
  water
Asked by AA45F to Chris on 22 Jun 2016.
- Chris Hackett answered on 22 Jun 2016:
  
  well, we know what it looks like as rovers have been to mars and taken pictures. Satellite images have shown what looks like evidence of where liquid water would have been and images of frozen water at the poles has been taken. The mission I am on now will send a rover to look for life but so far we haven’t proven anything was or is there living.

AA45F commented on 30 Jun 2016:

thanks for answering!! also well done on answering all our questions on that live talk from ages ago!!!

Question: I have seen lots of movies about people on Mars, but how much do we actually know about whats on or what was on it like water, rocks and maybe even other living things?????