Scientists Washburn University (USA) came to the conclusion that the key role in human evolution was played by the supernova. They contributed to dunagate — features, the cause of which is still unknown. About it reported in a press release on Phys.org.
According to scientists, cosmic rays, bombarding the Earth with the greatest intensity to 2.6 million years ago, initiated an avalanche of charged particles in the lower atmosphere of the planet. Ionization, in turn, provoked the emergence of a large number of thunderstorms and lightning. Frequent forest fires have forced the ancient primates to adapt to an open area, where the best was bipedalism (denagoth).
While bipedal primates have existed before, they were predominantly adapted to life in the trees. When you move in the Savannah, hominids were forced to walk from one tree to another, which contributed to bipedalism. The latter become profitable at dwelling in tall grass, as it allowed to look out for predators. All this led, eventually, to the appearance of bipedal human ancestors, Homo habilis.
It is known that in the vicinity of the Solar system at a distance of 163 to 362 light-years from Earth, several million years ago there occurred a supernova. This has led to the accumulation of the isotope iron-60 in marine sediments. According to calculations, the ionization of the atmosphere had increased 50 times, facilitating the formation of lightning. Soon, the event likely will not happen. The closest potential supernova star Betelgeuse is at a distance of 652 light years and will erupt for the next million years.
Video, photo All from Russia.