So today we will introduce you top 10 fact about Google that you may not know.
For the first time from the moment of opening of the first extra solar planets scientists could see such planet by supervision in the x-ray range with help of Chandra space telescope and the European XMM Newton. The majority known exoplanets (which number at present exceeds 900) opened with help of a so-called transit method — by fixing of small fluctuations of brightness of stars when passing planet against a star disk. Still supervision was conducted only in the optical range, but now scientists managed to see x-ray transit. Thousand candidate exoplanets were found thanks to transits in visible light. At last, the scientists could see one in a X-ray, which is important as gives new information on properties of exoplanets. Scientists watched passing before a disk of the sun of “a hot floodlight” HD 189733b. This is the gas giant opened in 2005 which is 1,14 times more than Jupiter and almost in as much time it is heavier than it. It addresses round a star of HD 189733 A whose size and weight make about 80% from the solar. HD 189733b is located about 30 times closer to the star, than Earth to the Sun. Thus falling of brightness of a star in a X-ray was stronger, than in the visible range. If in optics brightness fell for 2,4%, Chandra space telescope and XMM Newton recorded decrease in x-ray brightness for 6%-8%. The scientists interpret it as result of influence of the external atmosphere of a planet which is transparent for visible radiation, but is rather dense to detain X-rays.
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