If humanity ever gets serious about colonizing Mars, recruiting people to make the journey should be the least of our worries. When the Dutch nonprofit Mars One called for volunteers in 2013 to join its inaugural Mars mission, more than 200,000 people applied. And Mars One didn't dance around the nature of the trip: Aspiring astronauts knew they were signing up for a one-way ride.
But a willingness to die on the Red Planet is but one small prerequisite for getting there. Before leaving Earth, Mars-bound travelers must prepare for the physical challenges, like g-forces and microgravity. Passengers might also want to remove their gall bladder and appendix before the flight to avoid any rupturing due to pressure changes.
After the 150-day voyage through space, the real trial begins. Things we take for granted on Earth, like Wi-Fi, electricity, and access to the outdoors, will be hard to replicate on Mars. Beyond simply surviving, the first colonists will be tasked with making Mars habitable for future generations. Terraforming the planet to support life will be a centuries-long process.
To learn more about what it could take to travel to and survive on Mars, check out the below video from ASAP Science.