Wonderful movie - but I have some questions

Rating: 9/10 (18 November 2015)

A friend and I saw this movie today and we both agreed it was much more entertaining than we expected. And it having more cliff hangers than those silent "Perils of Pauline" movies kept us wondering if one or all 'Martians' would die. Also, as a happy & lucky survivor of the disco era I enjoyed and remembered all music in the sound track. However, we do have the following questions: 1) Is Mars weather that violent? 2) If so, wouldn't the astronauts been able to anticipate the opening storm with their improved future technology? 3) Are there tornadoes and lightning on Mars? 4) Is the Mars landscape in that specific story line area featured that beautiful? 5) Why did the movie not take in account two biological science issues: Solar/Cosmic Ray radiation effects, and bone mass loss due to lower Mars gravity?