2016: Mars One Supply Mission
Mars One plans to launch an unmanned supply mission in January 2016. It will land that October with more than 5,000 pounds of food or other supplies.
2018: Mars One's Rover Scout
The Dutch nonprofit Mars One aims to land a rover on Mars in 2018 to find the best spot to set up a human colony.
2021: Setting up the Mars Colony
All components of Mars One's settlement are slated to reach their destination by 2021. The hardware includes two living units, two life-support units, a second supply unit and two rovers.
2022: Getting Ready for Mars Colonists
All water, oxygen and artificial atmosphere production should be ready by 2022, according to Mars One. The first astronaut crew will be launched in September of that year.
2023: Bootprints on Mars?
If all goes according to plan, the first Mars One astronauts will touch down on the Red Planet in 2023.
2025: The New Crew Comes to Mars
In June 2025, the second crew of Mars One pioneers is slated to land on Mars in this artist's illustration. The Mars One project aims to send volunteer astronauts to the Red Planet beginning in 2023 to colonize Mars.
Mars One Colony
Artist's concept of Mars One astronauts on the Red Planet.
Mars One Colony and Astronauts
Artist's depiction of Mars One astronauts and their colony on the Red Planet.
Mars One's Bas Lansdorp
Bas Lansdorp is co-founder and general director of Mars One, which seeks to land astronauts on the Red Planet in 2023.
Mars One Million Martian Meeting
A poster for the Mars One project's Million Martian Meeting to discuss plans for a Mars colony mission in 2023. The meeting was held in Washington, D.C. on Aug. 3.
Mars One: Million Martian Meeting
Mars One volunteers for a one-way trip to colonize Mars in 2023 speak during a panel at the Million Martian Meeting in Washington, D.C., on Aug. 3, 2013.
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Michael Wall is a Senior Space Writer with Space.com and joined the team in 2010. He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.