Kepler-186 and the Solar System
The diagram compares the planets of our inner solar system to Kepler-186, a
five-planet star system about 500 light-years from Earth in the constellation
Cygnus. The five planets of Kepler-186 orbit an M dwarf, a star that is is half
the size and mass of the sun.
The Kepler-186 system is home to Kepler-186f, the first validated Earth-size
planet orbiting a distant star in the habitable zone—a range of distance from a
star where liquid water might pool on the planet's surface. The discovery of
Kepler-186f confirms that Earth-size planets exist in the habitable zones of
other stars and signals a significant step toward finding a world similar to
Earth.
The size of Kepler-186f is known to be less ten percent larger than Earth,
but its mass and composition are not known. Kepler-186f orbits its star once
every 130 days, receiving one-third the heat energy that Earth does from the
sun. This places the planet near the outer edge of the habitable zone.
The inner four companion planets each measure less than fifty percent the
size of Earth. Kepler-186b, Kepler-186c, Kepler-186d and Kepler-186, orbit every
4, 7, 13 and 22 days, respectively, making them very hot and inhospitable for
life as we know it.
The Kepler space telescope infers the existence of a planet by the amount of
starlight blocked when it passes in front of its star. From these data, a
planet's radius, orbital period and the amount of energy recieved from the host
star can be determined.
The artistic concept of Kepler-186f is the result of scientists and artists
collaborating to imagine the appearance of these distant worlds.
NASA
Guillermo Gonzalo Sánchez Achutegui
nscríbete en el Foro del blog y participa : A Vuelo De Un Quinde - El Foro!
1 comentario:
En efecto; si hubiera agua en el denominado Planeta "Kepler 186f"; es porque debe tener también una atmósfera similar a la de la tierra, osea el aire...Que contenga gases como el "Bióxido de Carbono" y el "Oxígeno", necesarios para la vida....Y con este tipo de atmósfera, no sería nada extraño que se puedan producir u originar los fenómenos atmosféricos, conocidos y que son parte de nuestro entorno como son "La Temperatura", "La Humedad", "Los Vientos", "La Presión Atmosférica" y "Las Precipitaciones (lluvia, nieve y granizo) y si es rocoso o montañoso, eso va a determinar los microclimas, que en global contribuirían en permitir la existencia de algún tipo de vida.
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