Experts representing the European space Agency, suggested that in the future the gravity of the Solar system will enter one more star. If this happens, the light may disturb comets in the Oort cloud and even send some of them to the Ground. In the first place attention was drawn to a star called Gliese 710.
The Oort cloud – spherical region of the Solar system that contains many comets. Although its existence is not confirmed directly, many indirect factors allow us to propose the corresponding assumption with a high degree of probability. The outer boundary of the Oort cloud, apparently located at the distance of 50 thousand to 100 thousand astronomical units to the Sun, that is 50 000 – 100 000 times farther away than Earth.
Of all the stars, discovered by scientists to date, 97 at some point or another will be at a distance of not more than 150 trillion miles from the Earth, and 16 in the range of 60 trillion kilometers. As for Gliese 710, through 1.3 million years it will be “only” at a distance of 2.3 trillion miles from our planet – which would be huge by earthly standards, this distance may seem, it is 16 thousands of astronomical units. Thus, the star of “dives” in the Oort cloud is very deep.
Gliese 710 has been discovered and very well studied with the help of space Observatory Gaia. It is an orange dwarf, whose mass is about 60 percent of the mass of the Sun, and the speed of movement is quite modest for a star of 50 thousand kilometers per hour. Despite this, in the period of maximum approach to Earth it will become not only the brightest but also the fastest object in the night sky.
Experts note that “cometary bombardment” of the Earth as a result of convergence with the star is absolutely not guaranteed, however the likelihood of such a scenario are high enough to interest scientists. The researchers also report that the average star, able to redirect the comet towards Earth, be in a suitable distance of every 50 thousand years.