Tardigrades can survive the fall of the asteroid and supernova
Scientists often think about whether people will be able to survive some terrible disaster. Well, for example, that we will, if you will crash to Earth a giant asteroid from outer space? Or turn off the sun? Chances are people are not very much, but have plenty of tardigrades - a conclusion reached by researchers at Oxford University after a series of experiments.
tardigrade very unpretentious and can survive even in a rather harsh conditions. For example, they somehow frozen for 30 years, and then got, thawed back and found that they are alive and well, they want to and, most importantly, can multiply. Excellent feel they themselves and in other difficult conditions, for example when exposed to high temperature and on the ocean floor.
To find out what more can these amazing creatures, scientists from Oxford University have recreated in the laboratory conditions similar to those that may occur on our planet after any disaster. The researchers chose the possible scenarios, among which was a supernova explosion, a giant asteroid, and gamma-ray bursts. After a series of experiments, they concluded that the tardigrades, seems to have all the chances to survive humanity. Sufficient in size to destroy the asteroid tardigrades can not be expected in the near future, and the gamma-ray burst that can kill these invertebrates, too, must occur close enough to the Earth, that while certainly not planned. A supernova explosion must also be strong enough and come close to the Earth, and while the options available will not cause harm tardigrades, because they are easily transferred to a fairly strong radiation and could quite comfortably live on the ocean floor in the underwater volcanoes, for example. Tardigrades could stoically endure all trials by scientists, which in turn has given researchers new food for thought.
"I think if life has originated somewhere, to destroy it becomes quite difficult," - says Dr. David Slovan, one of the study's authors.
The researchers noted that their study points to the possibility of life on other planets, because if the world there are persistent guys like tardigrades, what can prevent them to live and feel great somewhere else?