An student in USA was first discovered exoplanets one that resembles our own world and seems to consist for the most part (50% to 75%) is covered by water and perhaps a single huge ocean depth of 15 km, while the remaining part consists of rocks.
It's smaller, less warm and more 'earthy' than those exoplanets have been found so far. The discovery increases the chances that there are planets in nearby solar systems, which collect the appropriate conditions for hosting life.
The new 'super-Earth "(the code name GJ1214b) has a radius 2.7 times larger than our planet, a mass of about six and a half times larger than Earth and 19 times more volume and is located in the constellation Ophiuchus, at a distance of about 40 light years away, orbiting a red dwarf star (a comprehensive behaviour of the earth takes 38 hours). The first measurements show that the exoplanets probably has a thick atmosphere of hydrogen and helium that block sunlight, resulting in surface waters to be in permanent darkness. The most probable composition is 75% water, 22% and 3% silicon iron (core).
With an estimated surface temperature is 120 to 282 degrees Celsius, the exoplanets is too hot for life to have, because it is close enough to the star-sun (just 2 million km), however, which is 3,000 times less hot than our own sun . It seems however that is a real "water world", according to the student Zakori Bertha, the Center for Astrophysics Harvard-Smithsonian, who made the first discovery, published in the magazine «Nature» (the responsibility of the study was the David of Sarmpono Harvard University), according to British press and the "New Scientist.
Part of the water of exoplanets is perhaps the exotic form of 'ice seven ", a crystalline form of water, a pressure of 20,000 times greater than the pressure of Earth's atmosphere.
The discovery was made under the MEarth which aims to identify planets like Earth elsewhere in our galaxy and for this reason, already students from around the world observe with ground-based telescopes (no older than indicated by the "professional" amateur astronomers) and 2,000 of the smallest stars in the sky to detect any planets orbiting them. Any star shows reduced brightness at regular intervals, may be an indication that someone wandering around exoplanets - or more. This was found and the new aquatic exoplanets.
The next step for astronomers in the Sarmpono will be to turn the space telescope "Hubble" in exoplanets to study directly the atmosphere and see if they are habitable (at least in terrestrial organisms ...).
Earlier this year, the French CoRoT spacecraft has detected the first exoplanets which is probably rocky. Waterway exoplanets discovered is actually the second person close to the Earth.
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