Astronomers at the Palo Alto Observatory warned the U.S. government Monday that a six-mile-wide asteroid will strike movie theaters nationwide this summer. 'America's moviegoers are about to be hit from above with non-stop thrills,' observatory director Phillip Howard said. 'If safety measures are not taken at once, the entire human race is in danger of being blown away by spectacular special effects and non-stop action.' Top Clinton cabinet members are meeting with Pentagon officials to see whether a barrage of missiles might destroy the $70 million Paramount Pictures release before it comes dangerously close to a theater near you. 