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[October 11 AFP] As a result of observing the wreckage of the planet which became in pieces in the distantly distant universe, English astronomers announced on the 11th that he discovered the trace in which both the surface of the earth of water and rock existed for the first time in out of the solar system in the U.S. science journal science (Science).
? — the planetary system to which it was about 150 light year away from the earth that the wreckage of this planet was found.
It is concluded that the environment which was suitable for the life once existed here, and also it is said that two or more terrestrial planets may have revolved the circumference of the fixed star “GD 61” around the sun.
?GD 61 lost energy about 200 million years ago, with the mighty gravity, drew the nearby planet close and made it in pieces.
GD 61 is the “white dwarf” to which planetary wreckage drifts around now.
Although the planet which does not elapse but has distance with ? fixed star in the life habitation feasible region [ that it is near ] “habitable zone” which is not too far is found until now, making gas into the main ingredients like Jupiter — or about composition of that it is made of rock like the earth, etc. and planets, distance separates too much to investigate the stellar surface — a sake — a mystery — carrying out — having — てい .
By ?, however the planet which became in pieces, the stellar main ingredients can be known by investigating the fragment.
Although investigation was conducted about the wreckage of 12 exoplanets which revolve a white dwarf around the sun until now, this is the first time that the trace of water was discovered.
In ? investigation, the ingredient of the fragment of the planet which became in pieces was investigated with reference to the data based on ultraviolet spectroscopy.
As a result, it turned out that the water of more [ far ] rates into this fragments than the earth was contained.
It is said that magnesium, silicon, iron, and oxygen which are the main ingredients of rock were detected from the atmosphere which surround a white dwarf.