Three studies released Wednesday, in the journal Nature and at the American Astronomical Society's conference in Austin, Texas, demonstrate an extrasolar real estate boom. San Diego State University astronomers, along with a team of scientists, have discovered two more planetary systems with two suns. Before, it was believed planets could only orbit a single sun, because a double sun, also known as a double star, would make the system too chaotic... The two new planets, Kepler-34 b and Kepler-35 b, are gaseous Saturn-size planets. Kepler-34 b orbits its two sun-like stars every 289 days, and the stars themselves orbit and...