Research suggests that lichens, a resilient group of lifeforms, could potentially survive on Mars. In a recent experiment, scientists exposed lichens to radiation conditions similar to those on the Red Planet. To simulate a year of Martian radiation, they blasted the lichens in just a day—and the lichens endured.
Mars is harsh. It’s a dry, cold desert with thin air and no liquid water on its surface. The biggest challenge for life is that Mars lacks a strong magnetic field, which protects against harmful cosmic radiation that can damage DNA. Despite these challenges, lichens—symbiotic organisms made of fungi and photosynthetic partners—show remarkable endurance. Some can survive extreme dryness and temperature swings, and a few have even thrived in the vacuum of space.
In the study, published in IMA Fungus, researchers tested two lichen species: Diploschistes muscorum and Cetraria aculeata. They placed these lichens in a vacuum chamber designed to reproduce Martian conditions and bombarded them with radiation. The results were promising—both species remained active and healthy throughout the experiment.
“These findings help us understand how living organisms react to Martian conditions,” said Kaja Skubała from the Jagellonian University in Poland. She highlighted the potential for lichens to adapt to—and possibly colonize—other worlds.
Among the tested lichens, D. muscorum performed best. It sustained less damage and appears more suited for potential survival on Mars. Still, no Earth lifeform can endure the conditions on Mars indefinitely due to the absence of liquid water, a necessity for life as we know it.
Interestingly, lichens aren’t the only candidates for future Mars missions. Other extremophiles, like tardigrades, are incredibly tough. They can survive extreme temperatures, pressure, dehydration, and even the vacuum of space by entering a state of suspended animation.
Research also indicates that certain mosses could survive on Mars. Some types can resist gamma rays and have shown resilience to harsh conditions in laboratories. Similarly, single-celled organisms like bacteria could endure beneath Mars’ surface, sheltered from radiation, potentially lying dormant for millions of years.
It’s fascinating to think about which lifeforms might one day journey to Mars. While lichens show promise, they represent just a fraction of what might thrive in the future. As humanity plans its next steps toward Mars, understanding these resilient lifeforms offers a glimmer of hope for the possibility of life beyond Earth.
For more insights into the study and future missions, you can visit the [European Space Agency](https://www.esa.int) and explore their current projects on Mars exploration.