Planetary Habitability
Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as Panspermia and Planetary Habitability is measured by planet's potential to develop and sustain life. As we are not certain about the existence of life beyond Earth, Planetary Habitability is largely an extrapolation of conditions to life's flourishing .
Energy is required to support life on a planet and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life.
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| Habitable Exoplanets |
Exoplanet Zone
An Exoplanet or Extrasolar Planet is a planet outside the Solar System. Astronomers have found more than 700 planets beyond solar system, and
stiil waiting for thousands planets confirmation by follow-up
observations. These Exoplanet worlds are too hot or too cold to support
life as we know it, but some of them are in favorable conditions.As of December 2012, We found 9 Exoplanets that have the best chance for life .
On November 4, 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of sun-like stars and red dwarf stars within the Milky Way Galaxy . 11 billion of these estimated planets may be orbiting sun-like stars.The nearest such planet may be 12 light-years away, according to the scientists.
On November 4, 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of sun-like stars and red dwarf stars within the Milky Way Galaxy . 11 billion of these estimated planets may be orbiting sun-like stars.The nearest such planet may be 12 light-years away, according to the scientists.
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| The Hue of Alien Earths |
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