Planetary alignment peaks with celestial show this weekend

(Reuters) - Venus and Jupiter, the two brightest planets in the sky this month, will be joined by tiny Mercury for a rare celestial show this weekend. SUNSET PLANET SHOW: When the sun goes down tonight, step outside and look west. Venus, Jupiter and Mercury are converging to form a bright triangle in the sunset sky. The best evening to look is May 26th, when the planets will fit within a circle less than 3o wide. Petr Horálek photographed the convergence over the Czech republic on May 24th: There won't be another triple conjunction of planets until October 2015, so don't miss this one!