New research suggest
that one fifth giant planet, the other four are Uranus, Saturn, Jupiter and
Neptune, was disqualified from our system about 4,000 million years. That
mysterious world today could be thousands of light years away and, which is
just as surprising, it is possible to have moons that, if they meet the
appropriate conditions are still warm enough to support life. A summary of the
study can be found at arXiv.org.
Our solar system is an
extraordinarily organized. The planets move in orbits broad, almost circular.
It is an exemplary system, very different from other discovered where the
orbits of the planets around their stars are very steep or elliptical. Some of
these worlds are so close to their suns at risk of dying exhausted.
David Nesvorny, the
Southwest Research Institute in Boulder, Colorado, has conducted a series of
simulations showing that this was not always so. He believes that in the past
the Solar System hosted fifth giant planet with several dozen times the mass of
Earth. This world may have large located between Saturn and Uranus or Neptune
beyond. Apparently, a close encounter with Jupiter system became unstable and
the fifth giant was expelled from his place of birth. The simulation Nesvorny,
the Discovery Channel explains on its website, indicates that our Solar System
was originally very chaotic. Smaller bodies also "got a kick" and
were sent away, and there was a "bombardment" of material that the
Moon is printed on its surface in the form of scars.
Lost
Planet
What happened is not as
incredible as it seems. Many planets may have been unaccompanied ejected from
their planetary systems and float freely in space. Recently, a team of
researchers from Japan and New Zealand found ten bodies dark mass of Jupiter,
far from any star. These lonely planets are quite common in our galaxy.
In addition, the expelled
planet could have their own moons. In that case, these partners could stay warm
in the absence of its star and perhaps keep enough heat to support life.
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