Today on March 20 Google Doodle celebrates Spring Equinox 2019, a celestial event that marks as the beginning of spring in many cultures. Spring Equinox…
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.View More Chandra space telescope pictured exoplanets in a X-ray
The first results of the analysis of eight hot planets showed that the structure of the atmospheres of these exoplanets is more difficult, than was considered earlier. Catharine Hitson from University of Exeter, England, delivered the report on carrying out this research on the National astronomical assembly which was taking place in Saint Andrews, Scotland, on July 5. Hot planets represent huge exoplanets the size approximately about Jupiter. The exoplanets address in such short distance to the stars that the atmospheres of these planets are warmed to 1000-3000 degrees Celsius. Astronomers can find what gases are present at the atmospheres of hot planets, analyzing a range of the star light which has passed through the atmosphere of a planet when a planet is directly before a disk of the star.View More New studies about exoplanets atmosphere structure
Published the new research, allowing to calculate influence of clouds on climate of alien planets, rotating round red dwarfs. Conclusions of participants of the joint group of the Chicago and Northwest universities are based on exact computer modeling of behavior of clouds in the atmosphere of alien planets. But besides purely scientific interest, this research also allows to draw a conclusion that existence of a cloudy cover twice expands a manned space of red dwarfs. And it means that only in one galaxy in a manned zone of the stars there can be over 60 billion alien planets. The formula for calculation of a manned space of alien planets is places where they can keep liquid water on the surface. But it is insufficiently exact as almost doesn’t consider existence of clouds in the atmosphere of exoplanet.View More 60 billion alien planets in a manned space of red dwarfs
The American scientists analyzed the data collected by a Kepler space telescope in scattered cluster of stars on a joint of constellations of the Swan and Lira. In one of them the scientists found two small impossible planets. Earlier the existence of these plants was considered as the impossible. Soren Meibom (from the Harvard-Smithsonian center of astrophysics in Cambridge) and his colleagues analyzed the data collected by a Kepler space telescope at supervision over cluster of stars in constellations of the Swan and Lira. In total scientists tracked fluctuations in brightness of 377 stars. In the scattered congestion NGC 6811 in Swan constellation which is removed from on 3 thousand light years, they found two impossible planets which brightness periodically went down. Scientists tracked its changes and came to a conclusion that blinking of these stars arose because on their disk passed rather small giant planets of Kepler-66b and Kepler-67b, whose radius were more than terrestrial everything by 2,8-2,9 times.View More Kepler space telescope discovered impossible planets in a cluster of stars
Scientists managed to find a young giant planet at record distance from a star in 80 astronomical units. Discovery is made with help of observations over a dust disk, which astronomers made with use of telescope Hubble. The giant planet is found near a star of TW Hydrae which belongs to the class of red dwarfs and removed from Earth for 176 light years. The age of a star is estimated at eight million years that isn’t enough to measures of star evolution. About the youth of TW Hydrae speaks including existence round a gas-and-dust disk. New pictures allowed scientists to see that the disk is non-uniform: telescope Hubble found in it a ring gap in the form of a strip at distance about 80 astronomical units from the center. For comparison, the radius of an orbit of the Neptune is equal to 30 astronomical units, distances from Earth to the Sun is150 million kilometers.View More Telescope Hubble found the giant planet which has record distance from its star
The black gas giant of TrES-2b rotating round a star of the spectral class G0V GSC 03549-02811 was open by the transit Trans-Atlantic Exoplanet Survey method on August 21, 2006. The surprising planet is located at distance about 720-750 light years from Earth in zodiac the Dragon constellation. Opening of the gas giant TrES-2b was confirmed on September 8, 2006.View More The gas giant of TrES-2b lives in the Dragon constellation
Astronomers were extremely lucky to find an exoplanet with a direct method.
It is quite difficult to find the exoplanet, which is far from our Solar System. For their detection astronomers use indirect methods, but this time scientists were very lucky. They managed to find huge massive exoplanet a direct method at the help of tools of a land telescope of VLT, which is in Chile.
Besides, scientists quite simply found exoplanet HD95086 b in constellation of Kiel on removal of 300 light years from Earth, they also photographed it. This planet lives in an orbit round the central star of HD95086.View More Discovered huge exoplanet HD95086 b
The telescope Kepler found at once two potentially manned planets rotating round the general star. Only twenty years ago astronomers didn’t know about existence of similar planets, and the Solar system, even taking into account the latest discoveries in area of exoplanet, continued to be considered as the unique. However opening of planetary system at a star of Kepler-62 is capable to change this representation. Planets from this scattering differ by the size, and round a star they do a complete revolution for the period of 6 days to 9 months. Two most remote of these planets and the most suitable lives were open for emergence by the astronomer from the Washington University Eric Eygol. The most extreme, Kepler 62f probably a firm planet, by only 1,4 times of the continent, makes a turn round a star in 267 Earth days. Her neighbor, Kepler 62e, which has also got to a zone of a habitability, in 1,6 times more Earth, year on it makes 122 Earth days, and from a star she receives 20% more energy, than our planet.View More New planetary system discovered Kepler telescope
Astronomers from Japan and New Zealand offered new strategy of search of the Earth-sized planets, which number in our galaxy scientists estimated at 100 billions pieces. Strategy is based on a gravitational microlensing method. In the research astronomers suggested to combine the information obtained from space observatory “Kepler” and as a result of application of a gravitational microlensing. The combination of two techniques will allow to find Earth-sized planets, which are in orbits from 0,5 to 10 astronomical units (distance from Earth to the Sun). The planet of the terrestrial sizes on considerable removal from a star can’t almost be found a transit method which is applied on a telescope “Kepler”. The space observatory fixes falling of brightness of a star when the planet passes between it and Earth. Thus, “Kepler” is capable to find about 17 billions planets of terrestrial type in the Milky Way. The transit method of supervision exoplanet is the most widespread, on an equal basis with a Doppler method.View More The new method based on gravitational microlensing for searching exoplanets