Still flourishing under gravity 400,000 times Earth’s

Proving that you don’t have to be big to be tough, some microbes can survive gravity more than 400,000 times that felt on Earth.

Most humans, by contrast, can tolerate forces equal to about three to five times Earth’s surface gravity (g) before losing consciousness.

The extreme “hypergravity” of 400,000g is usually found only in cosmic environments, such as on very massive stars or in the shock waves of supernovas. Scientists were able to replicate hypergravity on Earth using a machine called an ultracentrifuge.

The scientists rapidly spun four species of bacteria—including the common human gut microbe Escherichia coli—to create increasingly intense gravity conditions.

Normal gravity (left) and hypergravity (right)

The bacteria clumped together into pellets as the gravity increased, but their forced closeness didn’t seem to deter growth: All four species multiplied normally under thousands to tens of thousands of times Earth’s gravity.

Two of the species—E. coli and Paracoccus denitrificans, a common soil bacteria—grew under the strain of 403,627 g. Read more here.

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