Upsilon Andromedae: An Extra Solar System . ... Credit Copyright: Lynette Cook Explanation: Yesterday, astronomers announced the discovery of the first system of planets around a normal star other than our Sun . Previously, only single planet star systems had been found. ... The drawing above is an artist's depiction of the Upsilon Andromedae system and its innermost planet. This planet orbits unexpectedly close to its parent star. ... NASA Web Site Statements, Warnings, and Disclaimers . ...