The giant planet

Telescope Hubble found the giant planet which has record distance from its star

Scientists managed to find a young giant planet at record distance from a star in 80 astronomical units. Discovery is made with help of observations over a dust disk, which astronomers made with use of telescope HubbleThe giant planet is found near a star of TW Hydrae which belongs to the class of red dwarfs and removed from Earth for 176 light years. The age of a star is estimated at eight million years that isn’t enough to measures of star evolution. About the youth of TW Hydrae speaks including existence round a gas-and-dust disk. New pictures allowed scientists to see that the disk is non-uniform: telescope Hubble found in it a ring gap in the form of a strip at distance about 80 astronomical units from the center. For comparison, the radius of an orbit of the Neptune is equal to 30 astronomical units, distances from Earth to the Sun is150 million kilometers. Gap existence in a disk specifies, according to scientists, on emergence of a giant planet weighing from 6 to 28 masses of Earth which collected all material along the orbit.  Now by the definition of the term planet accepted ability to create free gaps from small objects in dust disks distinguishes a planet from an asteroid or minor planets like Pluto. The giant planet belongs or to a class super mass, or to ice giants. And the remoteness combination from a star, weight, age and absence round dense clouds of a dust sets a difficult task for astronomers. The giant planet or is quite rare exception of the general rule, or traditional models of formation of planets have essential shortcomings. The theory according to which the planet grows at the expense of slow adhesion of a dust and particles from a disk surrounding a star, simply doesn’t allow a heavenly body to arise for so short term. Fast, literally for thousands years, emergence of a planet predicts model of gravitational instability of a disk. With help of telescope Hubble, and also future telescope “James Webb” scientists hope to make additional observations and to find out, whether it is possible to use new opening in favor of one of models.