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In our galaxy could be the life of the age of 11 billion years - VIDEO PDF Print E-mail
Friday, 06 February 2015 13:09

 "We know that Earth-like planets were formed for most of the long history of the Universe 13.8 billion years, which certainly made provisions for the creation of ancient life in our galaxy - said Thiago Kampante, scientist, University of Birmingham. - It is curious that the ancient system of Earth-like planets formed in the early Universe, when she was five times less years. Kepler-444 in two and a half times older than our solar system, of which only 4.5 billion years old. This tells us that planets of this size were formed throughout the history of the Universe, and we need to understand exactly when it started to happen. "

This Sun-like stars with planets in orbit, born at the dawn of the existence of the galaxy was discovered by an international team of astronomers. As the age of 11.2 billion years old and possessing planets, it supports the view that these planets were formed throughout the history of the Universe.

About this discovery first wrote a few days ago Astrophysical Journal, were used in the observations of the satellite "Kepler» NASA. Community of scientists has developed from employees at Birmingham University and the University of Sydney.

The star, dubbed Kepler-444 contains five planets slightly smaller than Earth, ranging in size from Mercury to Venus.

"We've never seen anything like it - so old star, and so many small planet in its orbit," - said Daniel Huber, one of the authors.

Together with their foreign colleagues, the team determined the age of the stars and planets. They used a method of measuring the vibrations - the natural resonance of the stars that create sound waves captured by the star.

They lead to the smallest change in momentum or brightness of the star and allow scientists to measure the diameter, weight and age of the star. The presence and size of the planets detected by darkening that occurs when a planet passes in front of the star. This drop in luminosity of the planet allows, in turn, to accurately measure the size of a planet about the size of the star.



"When about twenty years Asteroseismology just appeared, we could use its methods to the Sun and a few bright stars, but thanks to the" Kepler "Now we can apply them to the thoUSAnds of other stars. Asteroseismology allows us to accurately measure the radius of the Kepler-444, and hence the size of its planet. The radius of the smallest planet in the Kepler-444 is about 100 kilometers, it is slightly larger than Mercury, "- says Huber.

"Even at an early stage it became clear that something unusual, because we had five planets orbiting very bright star - one of the brightest detected" Kepler ". It's fantastic, we can use asteroseismology to determine the age of the star and its other features. "

"In the case of Kepler-444, the planets revolve around the parent star in less than 10 days at a distance of less than ten times than the Earth-Sun. The proximity to the parent star means that the planets are uninhabited, because they do not have liquid water and very high levels of radiation. Nevertheless, opening like Kepler-444 provide us with important clues about what the planet is more Earth-like, can indeed exist. We are one step closer to the holy grail of astronomers - Earth-like planets with a one-year orbit around a star similar to the Sun. "


НАЖМИТЕ ЗДЕСЬ ДЛЯ ПРОСМОТРА ВСЕГО СПИСКА НОВОСТЕЙ О НЕОБЫЧНЫХ ЯВЛЕНИЯХ>>>

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