Poll Maker
Feel free to select multiple.
What are the greatest challenges remaining for getting to Mars?
Money/Funding
Permission/Politics
Launching Starship+SuperHeavy
Orbital Refueling
Landing Starship (from Orbit)
Landing SuperHeavy
Radiation Shielding
Mars Landing
Power Production on Mars
Hydrogen on Mars
Carbon dioxide on Mars
Robotics
Mars shelter
Low Gravity on Mars/in Space