Nobel-winning astronomer Michel Mayor has challenged Elon Musk’s ambition to establish a million-person Martian colony, warning delegates at the Starmus science festival that extreme surface conditions, severe radiation, and toxic soil make the Red Planet unviable for mass human migration.
Nobel Laureate Rejects Martian Settlement Timelines
Space Exploration Technologies Corp. has published roadmaps targeting the transport of more than one million settlers and millions of tons of cargo using reusable Starship spacecraft, with founder Elon Musk aiming for more than 30 daily launches by 2030 and initial cargo missions scheduled no earlier than 2028. But Mayor dismissed these projections as fundamentally unachievable, telling attendees that humanity must focus its efforts on protecting its home world.
The vision of a self-sustaining human civilization on Mars within the next century has run into stiff resistance from the scientific community. Speaking at the Starmus conference in Tenerife, Spain, Prof Michel Mayor argued that proponents of interplanetary colonization are ignoring basic physical and environmental realities.
We do not have a Planet B. We have to take care of Earth.
Hostile Martian Environments Defy Human Settlement
Detailing the obstacles facing any potential colony, Mayor pointed out that the Martian atmosphere offers virtually none of the elements required to sustain unassisted human life. The pressure on Mars is something like one hundredth of the Earth’s atmosphere. It’s carbon dioxide, argon, but no oxygen. So it’s absolutely not convenient for man,
he noted during his address.
Surface data indicates temperatures reaching minus 153 degrees Celsius alongside radiation exposure running roughly 40 to 50 times higher than levels experienced on Earth. Settlers would also contend with severe dust storms and toxic soil that renders traditional agriculture impossible, sharply contrasting with cinematic depictions of farming on the Red Planet.
Survival on the surface would necessitate entirely enclosed living arrangements, forcing inhabitants into underground bunkers or pressurized domes to fend off extreme cold and cosmic radiation.
Exoplanet Discoverer Dismisses Interstellar Escape
Mayor shares the 2019 Nobel Prize in Physics with Didier Queloz, an honor earned for their 1995 discovery of 51 Pegasi b, the first confirmed exoplanet orbiting a Sun-like star outside our solar system. That milestone opened a new era in astronomy, leading to the identification of more than 6,000 exoplanets, including more than 2,600 confirmed by NASA’s Kepler space telescope with more than 200 residing in habitable zones.
Traveling to a relatively close habitable planet located 30 light-years away using Apollo-era spacecraft speeds would require millions of years, making mass interstellar migration an physical impossibility.
We have to keep in mind the physics… So, to settle there, people would have to live in pressurised structures, either domes or underground, trying to protect themselves from the cold, and radiation. So, do you really dream of going to this surface? Do you believe that really we will migrate one million persons on the next century? No.