http://truthufo.blogspot.com/: The exoplanets similar to Earth soon observables

Thursday, 21 August 2008

The exoplanets similar to Earth soon observables

A comb astronomical "laser improving measures 60 times acceleration of stars was developed to discover extra-solar planets similar to Earth, researchers reported in an article published in the British journal Nature. This new instrument should make it possible to detect tiny accelerations produced by exo-planets the size of Earth orbit at distances from their star making them habitable: neither too close nor too far so that they are neither too hot nor too cold to host life.

So far, 277 exoplanets have been discovered, but no similar to the Earth because of the precision instruments that can detect planets 5 times larger than ours, and as far away from their star than Mercury. This "astro-comb" significantly increase the extent of the "radial velocity", which has already led to days of extra-solar planets, and "should revolutionize spectroscopy astrophysics," according to one of the authors of the article, Chih-Hao Li, from Harvard University in Cambridge (Massachusetts).

The method "radial velocity" is to detect in the spectrum of a star disruption of his movement caused by the presence of a celestial body. The second method to find these planets is called "transit" with the search for possible changes and regular brightness of a star. In a commentary accompanying the study, Gordon Walker, a professor at Vancouver, believes that the implementation of this "astro-comb", "could represent a major breakthrough in the precision of astronomical spectroscopy."

Note from the webmaster: Up to now our instruments could not detect the planets of comparable size to land (only 5 times the size of the earth minimum). is a major step forward that will allow us to detect the planets similar to Earth in the coming years! It is a big step forward in the search for life