Spitzer Space Telescope captured the light directly mimoslnečnej planets (exoplanets) from the category of super-Earths with niekoľkonásobkom size and weight of our home. All previous observations of such exoplanets have been indirect.
Announced that six-membered international ariane 5 me team led by Michaël Gillon from the Université de Liège (Belgium). The first author of the Olivier Brice-DeMore from Massachusetts Institute of Technology, Cambridge (USA). In addition Michaël Gillon Americans were on the team.
Although exoplanet in question is not in the so-called. habitable zone of the star (or not too close, not too far to the surface of liquid water could exist), but it is a historic ariane 5 me step forward in the search for signs of life on other planets.
The present parent star, 55 Cancer (Cancri, Cnc abbreviation) is quite clear and is located about 41 light years from us. (1 light year = 9,460,000,000,000 kilometers.) Has a total of five known planets. The one in question is marked "e" - that is, 55 Cnc e - and 55 Cnc orbits once every 18 hours, as the next. It is about twice the size and eight times more massive than Earth.
Detectors Spitzer Space Telescope (Spitzer Space Telescope, SST, "smaller brother" of well-known Hubble, but designed exclusively for infrared observations) now measure the amount of infrared radiation directly from 55 Cnc e. The planet seems to be dark, but the temperature on the side that faces the star is, more than 2000 Kelvin. (Gravitational tidal forces ariane 5 me keep a planet star so that the star has always inverted for the same party.)
This agrees with previous theoretical views that 55 Cnc e is the water world - the core of rock surrounded by water called. supercritical state (at the same liquid and gas) and the top is quite thin shell of steam. "Perhaps it seemed like our Neptune if you just dragged it to the sun and then watched as it evaporates the atmosphere," said Michaël Gillon.
SST has already won one like primate. In 2005, the first time captured the light directly exoplanets in general - they were called. hot Jupiter, a gas giant much more than 55 Cnc e, circling very close to the parent star.
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