Life might be tougher than we ever imagined. And it might not stay where it starts.
A new study from Johns Hopkins University, published in the journal *PNAS Nexus* in March 2026, has demonstrated that certain microorganisms can survive the extraordinary pressures generated when an asteroid strikes a planet and blasts debris off its surface into space — a necessary first step in the process scientists call lithopanspermia: the natural transport of life between planets on rocky fragments.
The research team, led by senior author K.T. Ramesh, used a gas gun to fire projectiles at metal plates sandwiching samples of *Deinococcus radiodurans* — one of the hardiest bacteria known to science, already famous for its ability to withstand extreme radiation, dehydration, and cold. The goal was to replicate, as closely as possible, the shock pressures generated when a large asteroid impacts a planet's surface.
For context: the deepest point in Earth's oceans — the Mariana Trench — generates a pressure of roughly 0.1 gigapascal. Asteroid impacts can generate pressures many times greater. The team tested their bacteria at 1 to 3 gigapascals.
The results were remarkable.
At 1.4 gigapascals, nearly all of the bacteria survived. At 2.4 gigapascals, 60% survived. At the highest pressures tested, the steel equipment broke before the bacteria did.
'This is a really big deal that changes the way you think about the question of how life begins and how life began on Earth,' said Ramesh.
The findings reframe a long-debated idea. For decades, scientists have speculated that life might not be confined to the planet where it originated — that microbial stowaways, sheltering inside ejected rocks, could survive the trauma of impact, the vacuum of space, and re-entry into a new world's atmosphere. Mars and Earth exchange rocky material regularly: Martian meteorites have been found on Earth. The distance, it turns out, is not the hard part.
Now we know the launch might not be either.
Perhaps life is more adventurous than we gave it credit for. Perhaps it has always been looking for somewhere new.
Perhaps it already found one. 🌍🪨