Bibliografia Consultada:
[1] – Loren Eiseley, The immense Journey (1946)
http://pt.wikipedia.org/wiki/Gliese_581_c
www.BBCBrasil.com, 09 de Outubro de 2008
"In a universe whose size is beyond human imagination, where our world floats like a grain of dust in the void of the night, men have grown inconceivably lonely." [1].
Human beings have long questioned their existence in the universe. Are we alone in the universe, or are there many other Earths scattered throughout the cosmos? More than 200 extrasolar planets have already been discovered, but with no signs of extraterrestrial life so far. And whenever news breaks about the discovery of yet another planet, our eyes turn to the sky in the hope that such an inhabited planet will appear.
In April 2007, the discovery of Planet Gliese (Gliese 581c), which orbits the red dwarf star Gliese 581 in the constellation Libra, was announced. Discovered by European astronomers, this planet is 20.5 light-years from Earth, has a diameter 50% larger than Earth's, and has a gravitational pull 1.6 times that of our planet. Scientists believe this planet has the conditions to harbour life, going so far that on October 9th, some scientists used the radio telescope located in the city of Yevpatoria (Ukraine) to send messages containing photos, drawings, and text. Traveling through the universe at the speed of light, these messages will reach planet Gliese in the year 2029. If by any chance intelligent life exists there with the capability to understand our messages, and if they send a reply back, we will receive a response in 2049! So, we shall wait for news from another world!!
Consulted Bibliography: [1] – Loren Eiseley, The Immense Journey (1946) http://pt.wikipedia.org/wiki/Gliese_581_c www.BBCBrasil.com, October 9, 2008
