Star sows death in the solar system and space, threatening extinction of life on Earth - Nemesis

Learn the theory of the Nemesis star, which revolves around the sun and cause catastrophic events every 26 million years. Nemesis - hypothetical trudnoobnaruzhimaya star (a red dwarf, the white dwarf or brown dwarf). It is assumed that it revolves around the Sun at a distance of 50-100 thousand astronomical units (0.8-1.5 light-years), beyond the Oort cloud. The assumption of the existence of such a star was made in an attempt to explain the observed periodicity of mass extinctions of species on Earth, which, according to some scientists, occur about every 26 million years. Such a hypothetical star was moving in an elliptical orbit with a large eccentricity. When approaching it to the sun, it perturbs the orbits of comets, the Oort cloud, thereby increasing the number of comets entering the inner solar system, and hence the number of collisions of comets with the Earth. Hypothetical star was called "Nemesis" in honor of the Greek goddess of retribution. Another of its name - "Death Star." What type of object can be a nemesis, if it exists, is not clear. Richard Muller suggests that it is likely a red dwarf, having a visible stellar magnitude of 7 to 12m, while Daniel Whitmire and Albert Jackson believe that Nemesis - a brown dwarf. If Nemesis is a red dwarf, it certainly has been included in the catalogs of stars, but its true nature can only be detected by measuring its parallax. Because of its orbit around the Sun, she is very little proper motion, so that, in contrast to, for example, Barnard's Star, it can not be detected by studies that measured the proper motion of stars. Since the last major mass extinction occurred about 5 million years ago, Muller points out that Nemesis is likely, is currently at a distance of 1 to 1.5 light-years from the sun. Based on the data of the original apogee of the orbit of several atypical long-period comets it was also concluded that currently nemesis must be near the constellation Hydra Stars and planets, galaxies, moons, asteroids and meteorites - everything about space and space objects on our channel "universe". The most complete collection of documentary films about space, its structure and life. Watch every day new documentaries about the universe, penetrate into all the mysteries of outer space and find out all mysteries of the universe! We reveal all the secrets of the cosmos and the universe, mysteries of the solar system and galaxy. All of the most stunning objects in the Universe - pulsars, quasars, black holes, planets giants and terrestrial planets will reveal to you its secrets. You will get acquainted closer with the planets Mars, Jupiter, Venus, Saturn, Uranus, Neptune, Pluto, Mercury and other planets with strange galaxies and their satellites. Do not forget to tell about the planet Earth and its satellite, the moon. The documentaries offers stunning Hubble Space Telescope images and terrestrial telescopes, to help develop the science of astronomy, interesting space exploration, observation of the stars, constellations and star of the sun. We also try to answer the question whether there is extraterrestrial life, UFO with aliens, and where space may be other civilizations. We put an end to disputes about the matter, and the infinity of time. The first look at neutrinos and dark matter. We learn about the mortal danger posed by asteroids, meteorites, meteors and comets for life in the universe created by the Big Bang. Nemesis, the star's death, space, stars, universe, galaxy, galaxies, the big bang, the constellation, planet, planets, solar system, moon, ufo, aliens, extraterrestrials, Earth, Moon, Mars, Jupiter, Venus, Saturn, Uranus, Neptune, Pluto , Mercury, astronaut, rocket, meteor, comet, astronomy, matter, quasars, telescope, meteor, infinity, Sun, Hubble, asteroid, NASA, a documentary film, a black hole, neutrinos, dark matter, atmosphere, climate, radiation.