La pregunda más grande y más vieja del mundo: "¿Somos solos en el universo?"
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Esta pagina esta dedicada a la búsqueda de una segunda tierra
Desde el año 1995 los astrónomos han encontrado más que 420 sistemas de planetas en el universo y mas que 500 planetas extrasolares. Aqui se puede leer las ultimas novedades de otras tierras en el universo.
Carnegie Institution of Science: "There could be one hundred billion Earth-like planets in our galaxy...". y Berkeley : "Earth-Sized Alien Planets May Be Surprisingly Common" or "25% of Sun-like stars have Earth-like planets.. (and)...there could be even more Earth-size planets"
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Posibles otras tierras en el universo: Kepler-22b . It orbits its star every 290 days. Gliese 581g (en cuestión, dudoso) HD85512b HD40307g Gliese 581d Gliese 163c Tau Ceti f Tau Ceti e KOI -351 Kepler 186f GJ 832c Kepler 283c GJ180c, GJ180b Kepler 61b GJ 422b GJ3293c Kepler 298d Kapteyn b Kepler 174d Kepler 296f GJ 682c KOI-4427b Kepler 62f, Kepler 62e Keppler 296e, Keppler 296f Kepler 438b Kepler 442b Kepler 443b Kepler 440b Kepler 444(c,d) These exoplanets are considered to be in the habitable zone and have a rocky composition: Trappist-1 has 6 planetes in the habitable zoneLHS 1140b Ross 128b
For the first time an atmosphere has been detected on a planet 1.6 times the mass of Earth and 1.4 times the radius. The planet GJ 1132b orbits a red-dwarf star 39 light-years away and is classified as a super-Earth. It seems GJ 1132b has an atmosphere that is opaque to infrared but transparent to other wavelengths. It is assumed that the atmosphere may be rich in oxygen and methane. It could be a water planet with a steam atmosphere.
Aqui se puede leer como comenzó la busqueda de planetas extrasolares . CDS Portal, simultaneous search in Simbad, Aladin and VizieR The exoplanets catalog maintained by Jean Schneider (CNRS-LUTH, Paris Observatory) The Transiting Planets (Frédéric Pont) Stellar data basehttp://www.atlasoftheuniverse.com/ Solstation becomes more and more useful Celestia The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X. Fits Liberator is now a stand alone application (Photoshop since Version 3.0 no more required) pdf here, downloads here Photometric Software for Transits (PhoS-T) rather archaiac: only available per email-!Astronomical Image Browsers
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