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Posted by on Aug 29, 2012 in Science |

Discovered the first binary system with more than one exoplanet

Discovered the first binary system with more than one exoplanet

(C) George Lucas

Previously astronomers have found planets in binary systems, where two revolve each other around their center of mass, but this is the first time I found one with two planets, where even one of them is in the pair stars.

The planet is called Kepler-47c, and its size -4.6 times the diameter of the Earth is probably a gas giant but it is possible that could have rocky moons where life could exist perfectly, because the habitable zone is that range of distance to a star where water can exist in liquid form on its surface (if it is closer to the heat would evaporate if farther and freezes).

One of the scientists who discovered the system, Jerome Orosz of San Diego State University in California, believes that “if he returned to France and tell you that people wear shoes, you would not be surprised because we all wear shoes. So seeing that almost all the planets in the solar system have moons, it would not surprise me to find a Kepler-47c “.

Orosz new found when examining the data from the Kepler space telescope , which is dedicated especially to seek this type of stars, and speculated that if they have moons, the Suns would be relatively close together in the sky and when you hide, the other would follow at 15 or 30 minutes.

The astronomer said that “the seasons would be very strange. The distance between the moon and the biggest star would change constantly, so the amount of heat that may get vary much around its orbit, which we estimate would be over a week, “speculates Orosz.

In other words, if the Kepler-47c had a moon rock solid, the four seasons may vary over the course of a week, and if it is similar to ours that has a face that always looks at our planet, for Half of the hypothetical moon always would look in the sky to Kepler-47c.

Link: Astrophile: Two planets with two suns up odds for life (New Scientist)

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