Found the first planet orbiting a white dwarf
Source:
white dwarfs may be entire planets
Scientists have long speculated about the possibility of the existence of planets near — superdense stellar bodies, which is essentially dead objects. Due to the fact that in the vicinity of these heavy objects was found a large quantity of asteroids, comets and other small planetary objects that astronomers for a long time could only assume that after becoming a dying star in a cold white dwarf planetary systems, not just survive, but remain in their places. It seems that the new discovery may finally put an end to the long disputes of astronomers and planetary scientists.
How and why are white dwarfs?
The Vast majority of stars in the milky Way galaxy, including our own Sun will eventually become white dwarfs. When stars have finished burning their nuclear fuel, they swell up, turning into huge red giants, and then ultimately the quanta collapse into the dark white dwarfs, which are compressed into a sphere the size of the Earth.
As the portal , located in 2040 light-years white dwarf WDJ0914+1914 were first discovered using the Very Large Telescope of the European southern Chile. Observations of white dwarf has shown that around the detected object was a large amount of emissions from a ring of gas around a superdense object made up of hydrogen, oxygen, and sulfur. The composition of the disk around was very similar to the composition of the ice giants in our Solar system. In addition, in the vicinity of a superdense star has been found neptunesuzy world, which was four times wider than the WDJ0914+1914.
the Sun will become a white dwarf in about 6 billion years, destroying most of the planets of the Solar system
Despite the fact that scientists first managed to find in the Universe so unusual object, the calculations show that the days of the discovered planet, it seems, are numbered. White dwarf, the surface temperature of which is about 50 to 400 degrees f (28,000 ° C), vaporizes alien Neptune at an astonishing rate — about 3640 tons per second.
Scientists believe that one day the same fate may befall our star system. When approximately 5 billion years our Sun will expand to the size of a red giant, it will engulf not only the nearby mercury and but and our Land. After some time, our star will probably emit enough high-energy photons to eventually evaporate Jupiter, Saturn, Uranus and Neptune. Some of the components of the planet these gases may be detected by alien astronomers who will be able to observe our system in a similar manner as we currently can observe the material orbiting WDJ0914+1914. Researchers believe that in some sense WDJ0914+1914 gives us a glimpse into the very distant future of our own Solar system.
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