Dance of the tardigrades, 2018

Tardigrades are considered the most resistant to external conditions of the known organisms. In the state of anabiosis, they can survive at temperatures from almost absolute zero [6] to over 150 ° C, withstand 1000 times stronger ionizing radiation than any other animal [7], pressure of 6000 atmospheres, they can also survive over 100 years without water [8], and even in outer space [9] (their last trip into space took place on June 3, 2021 at 13:29 ET [10] - SpaceX launched 5,000 tardigrades at the International Space Station). These organisms are also able to withstand unusual salt concentrations [11]. The Kent team of scientists also identified their upper survival limit when shooting frozen tardigrades samples from a light gas gun into the sand. The impact velocity and the impact pressure at which they survive were measured. At an impact speed of 2,621 km / h (1,628 mph), 100 percent of tardigrades survived, while about 60 percent survived impacts up to 2,970 km / h (1,845 mph) [12].