To start our project we collected interesting topics related to Mars:

• color
• journey: the start of the journey (if they start the journey from Earth or a space station)    
• establishing a bridgehead
• populating Mars·      
• creating a breathable atmosphere
• psychological support of the astronauts
• whose Mars will be? (which country)
• energy
• magnetic field of Mars
• Why men are from Mars?
• discovery of the surface
• UFO attack   
• sending supplies
• religious questions
• are there materials/minerals that can be found on Mars but not on Earth
• water
• special clothes
• communication
• use of human waste
• do we need to send people on Mars?
• what if it blows up?
• why Mars
• meteors
• which gender should be sent?
• what's next?
• tourism
• self-preservation
• hibernation
• treatment of illnesses
• use of moons/ satellites
• special dangers
• effect of the length of days and years to human
• gravity
• hygiene
• winds/stormssphere geometry
• orientation
• astronomy
• moonshot thinking: Is going to  Mars moonshot thinking? https://www.youtube.com/watch?v=eaS_qYRzJ-A
• why is it a good idea or why not?
• is it possible to send people?
• comparing the surface of Earth and Mars
• comparing the atmosphere of Earth and Mars
• Google Mars
• paper/plastic/Lego model of the planet
• ethics of sending people to Mars
• space travel in literature and films
• other references to Mars in arts
• the Roman god Mars
• writing a novel / script about terraforming/sending people to Mars
• robotics for building a settlement on Mars
• debate on going or not
• the boardgame Terraforming Mars
• difficulties of space travel
• how would people physically change on the long term (many generations)
• The Mars One Project (https://www.mars-one.com/)
• Mars One project also had a list of their applicants, the 100 people who were selected to start training to go to Mars. Students could also try and contact some of these people and ask about their motivation, fears ...
• Nasa's Mars project
• Space X
• Terraforming Mars: why Mars? is it possible / feasible? ethics of terrafomation
• solar (or wind ?) energy
• volcanoes
• minerals on Mars
• communication: error correcting codes, place of satellites, time
• Puli project: the Hungarian Moon rover
• microbal life on Mars (now or in the past)