GAINESVILLE, Fla., May 7 (UPI) -- So-called hot Jupiter-type planets orbiting distant stars are likely alone in their systems, research by a University of Florida astronomer and others found.
Hot Jupiters, giant planets roughly the size of Jupiter but orbiting close to their parent stars -- and thus much hotter than Earth or Jupiter -- have short orbital periods, speeding around their parent stars in fewer than 10 days, astronomer Eric Ford said.