The former most valuable star a planet is diamond

Discovery of the "rock" of the larger cosmos trillion trillion carats, and a diameter equal to five times that of Earth. Its composition: carbon in the crystalline state. Just like a diamond. In recent years, discovered two other stars with characteristics compatible with the precious material ELENA Dusi

The 530-carat of the British crown jewels are dwarfed by the discovery of the largest diamond of the cosmos, which has a trillion trillion carats, and a diameter of 60 thousand kilometers, equal to five times that of Earth. If NASA could learn to get clear the debt and those of the entire American nation. But for the moment only a prince would have the power to fly up to the planet companion of pulsar PSR J1719-1438: 4 thousand light years straight up to the constellation of the snake, one-eighth the distance of the center of the Milky Way, to give the diamond to his heavenly beautiful.

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A "spark of light" of the precious planet has reached the telescopes of the earth, leaving somewhat perplexed cosmologists. The combination of size and mass of the star left no other choice with regard to its composition: carbon in the crystalline state. "This can be translated into one word: diamond," wrote the international team of astronomers from the latest issue of Science.

The discovery, led by the University of Melbourne in Australia, also attended the Institute of Astrophysics National Observatory of Cagliari with her. For years, researchers' attention was drawn to a rather peculiar pulsar.

This tiny star of a dozen miles across - like a small town - but a mass equal to that of a Sun and a half has the characteristic of swirling in on itself at a rate of 10 thousand revolutions per minute, emitting a beam button of radio waves.

Detected by ground-based telescopes, have revealed that these signals near the pulsar rotates a distant planet 600 thousand kilometers and capable of completing an orbit in two hours and ten minutes. Despite its relatively small size, is heavier than the planet Jupiter. "All of these features, particularly the high density, give us precise information about its composition," in Science, astronomers explain. The diamond heaven according to their studies is what remains of a giant star, whose components lighter (99.9 percent of the mass) have been sucked from the nearby pulsar. "If not - explain the scientists - we could not justify an orbit so fast. If the world was composed of lighter elements like hydrogen and helium would in fact much larger."

The theory that some particular stars have a heart of diamond was enhanced in the 60s. Over the past five years have been discovered two other stars with characteristics compatible with the precious material. One in particular is at a reasonable distance of 50 light years and was nicknamed "Lucy" in honor of the Beatles song Lucy in the sky with diamonds. Astronomers do not exclude that our Sun, when you go out in 5 billion years, will turn into a diamond for eternity.

Source repubblica.it