#constellation libra

Constellation Libra tattoo

15 years after the discovery of the first planet outside the solar system, astronomers Having reported on the opening in the constellation Libra there the first planet to habitable conditions. Planet orbiting the star Gliese 581, in the first place, most likely, rocky, and secondly - is located inside the so-called habitable zone, which can be calculated around any star. In a paper accepted for publication in the journal Astrophysical Journal, scientists have reported an increase in the number of open star planets at once for two - now numbering as many as six out there. Of greatest interest is Gliese 581g weighing three or four of Earth's mass and orbital period of 37 days. Mass of the planet gives scientists confidence that its surface is hard, and she is able to retain an atmosphere. Eternal Day "This planetary system we have those that are found on both edges of the habitable zone - both are very hot and very cold. Now we have found a planet right in the middle "- glad study co-author Steven Vogt of the University of California at Santa Cruz. According to scientists, Gliese 581g is pretty close to the star (0.146 AU) and is likely due to the tides turned to her one side. This circumstance makes the climate for it, if it exists, of course, stable and unchanging over time. Areas most suited for the existence of any life forms should be near the terminator - the interface of perpetual day and night. There (under the ice layer, for example) can be in liquid form and water. According to astronomers, the planet's surface temperature ranges from -31 to -12 ° C, decreasing on the night side and age on the day. The size of the planet in 1,2-1,4 times more earthly. Knowing the size and mass of the planet, a scientist was not too difficult to estimate the acceleration of gravity. It turned out that it is scarcely more than the earth, so that people could easily pass over its surface. Exoplanet discovery was preceded by 11 years of spectrometric observations at the Keck telescope name. Like most open today exoplanet, Gliese 581g was opened to assess the vibrations of the stars in the line of sight of land-Star. The more stars the planets, the more difficult task. By analyzing the Doppler shift of lines in the spectrum of stars, scientists need to allocate several harmonics, each of which is caused by a single planet. "To find this planet was really difficult," - said Vogt. According to him, astronomers had more than 200 times the spectrum of the star, commending her swing to within 1.6 meters per second. Ascertain the correctness of the findings helped the second method - photometric. Astronomers have measured the brightness of the star before and during the passage of the planet on its disk. "Our measurements of light showed that the star wobble caused by another planet, not some kind of process within it," - said study co-author Gregory Henry.

15 years after the discovery of the first planet outside the solar system, astronomers Having reported on the opening in the constellation Libra there the first planet to habitable conditions. Planet orbiting the star Gliese 581, in the first place, most likely, rocky, and secondly - is located inside the so-called habitable zone, which can be calculated around any star. In a paper accepted for publication in the journal Astrophysical Journal, scientists have reported an increase in the number of open star planets at once for two - now numbering as many as six out there. Of greatest interest is Gliese 581g weighing three or four of Earth's mass and orbital period of 37 days. Mass of the planet gives scientists confidence that its surface is hard, and she is able to retain an atmosphere. Eternal Day "This planetary system we have those that are found on both edges of the habitable zone - both are very hot and very cold. Now we have found a planet right in the middle "- glad study co-author Steven Vogt of the University of California at Santa Cruz. According to scientists, Gliese 581g is pretty close to the star (0.146 AU) and is likely due to the tides turned to her one side. This circumstance makes the climate for it, if it exists, of course, stable and unchanging over time. Areas most suited for the existence of any life forms should be near the terminator - the interface of perpetual day and night. There (under the ice layer, for example) can be in liquid form and water. According to astronomers, the planet's surface temperature ranges from -31 to -12 ° C, decreasing on the night side and age on the day. The size of the planet in 1,2-1,4 times more earthly. Knowing the size and mass of the planet, a scientist was not too difficult to estimate the acceleration of gravity. It turned out that it is scarcely more than the earth, so that people could easily pass over its surface. Exoplanet discovery was preceded by 11 years of spectrometric observations at the Keck telescope name. Like most open today exoplanet, Gliese 581g was opened to assess the vibrations of the stars in the line of sight of land-Star. The more stars the planets, the more difficult task. By analyzing the Doppler shift of lines in the spectrum of stars, scientists need to allocate several harmonics, each of which is caused by a single planet. "To find this planet was really difficult," - said Vogt. According to him, astronomers had more than 200 times the spectrum of the star, commending her swing to within 1.6 meters per second. Ascertain the correctness of the findings helped the second method - photometric. Astronomers have measured the brightness of the star before and during the passage of the planet on its disk. "Our measurements of light showed that the star wobble caused by another planet, not some kind of process within it," - said study co-author Gregory Henry.