Anticipating the landing of the Mars rover Curiosity, lectures and kids' activities take place from 10 a.m. to 5 p.m., Saturday, July 28; free. Kids may color; make Play-Doh planets, comets and impact-craters; and interact with the Physics Factory, robotics, meteorites, Newton's cradle, optical illusions, airplanes, rockets, insects and more. Displays feature images of Mars, the Mars Science Laboratory and the OSIRIS-REx Mission. Lectures are in Room 308: Alfred McEwen presents HiRISE imaging of Mars landing sites, landers and rovers from 1 to 1:45 p.m.; Veronica Bray presents the dramatic formation of Gale crater, or "What happens when a meteor hits a planet?", from 2 to 2:45 p.m.; and Shane Byrne discusses wet clay on ancient Mars from 3 to 3:45 p.m.. Call 621-4861, or visit www.lpl.arizona.edu (the www is required)
for more information.