SANTA CRUZ, Calif., July 27 (UPI) -- U.S. astronomers say the finding of an alien solar system with planets arranged as in our own system suggests most planetary systems start out looking the same.
The researchers have been looking at a star system 10,000 light years from earth that has three known planets all orbiting in the same plane and lined up with the rotation of the star, mirroring the arrangement of our own solar system.