That/m. Kornmesser
Artistic Printing of the Planet Barnard B
Scientists discover 4 rocky planets to orbit the nearest individual star to Earth. They are (very) small and are so close to the sun that the number of days of a “year” is told by the hands.
Barnard’s star was discovered in 1916 by astrophotographer Edward Emerson Barnard. Since then, it had been discovered.
Now a team of researchers found that this one is not alone: There are 4 mini-planets Orbiting the second closest star to Earth (the first individual, since the closest only the Alfa Centauro system), and the first closest to our sun-is only 6 light years old on our planet.
O, published in March in The Astrophysical Journal Lettersit also reveals that these planets are too close to the star so that they can host life — a “year” has in one of them only 2 days, And the farthest from the star is 7: they are therefore extremely hot.
They are also quite small – as compares to, they have only About one fifth to one third of the Earth’s mass. They are called Barnard B, C, E.
In fact, there were many obstacles that the team had to face to reach this discovery. Firstly, being small, these planets make fewer signs, which in turn are “muffled” by a “noise” emitted by this type of stars, which tremble and shine naturally.
Researchers then used advanced modeling and cutting -edge technology to separate the little whispers from the planets from the star’s noise. Used a technique called radial speed, which consists of the search for small oscillations in the light of a star caused by the gravitational attraction of the planets.
For this, it was necessary to create mathematical models detailed from the tremors and shaking of the star of Barnard.
According to NASA in Scitechdaily, the use of these new techniques can “open new windows for habitable and potentially life -bearing worlds.”
