A NASA funded astronomer has now discovered a planet rotating around a member of a triple star system, thus casting doubt upon old planetary theories of accretion disks condensing around stellar objects, thus creating an opening for new ideas. The idea of independent planetary masses coalescing, forming and settling at a point of equilibrium between the forces of gravity and repulsion between several cosmic objects should now explored in Planetary Formation and Orbital Spacing as a viable explanation.
The Challenge: The same gravitational tidal affects emanating from Jupiter, scientists have considered this theory to prevent planetary formation in the asteroid belt. Should not these same set of parameters also apply here as two stellar gravitational sources would disrupt and disperse any planetary formation from an accretion disk of gas around the primary stellar object of the system. If you consider this discovery to be the exception, soon many may find it to be the rule.
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Planet with three suns challenges astronomers
A NASA-funded astronomer has discovered a world where the sun sets over the horizon, followed by a second sun and then a third, as pictured in this artist's conception released by NASA July 13, 2005. The new planet, called HD 188753 Ab, is the first known to reside in a classic triple-star system. The astronomer, Dr. Maciej Konacki of the California Institute of Technology, Pasadena, California, found the planet using the Keck I telescope atop Mauna Kea mountain in Hawaii. The finding, reported in this week's issue of Nature, suggests that planets are more robust than previously believed.
The planet, a gas giant slightly larger than
Jupiter, orbits the main star of a triple-star system known as HD 188753 in the
constellation Cygnus ("The Swan").
The stellar trio and its planet are about 149 light-years from Earth and about as close to each other as our sun is to Saturn, U.S. scientists reported on Thursday in the current edition of the journal Nature.
A light-year is about 6 trillion miles, the distance light travels in a year.
you stood on the planet's surface, you would see three suns in sky,
although its orbit centers around the main yellow star among the trio.
The larger of the other two suns would be orange and the smaller would
be red, astronomers at California Institute of Technology said in a
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