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Dr. Riccardo DeSalvo, a physicist at California Technical University, is scheduled to speak at the Spearfish High School Auditorium Thursday, Sept. 18 at 7 p.m. DeSalvo’s speech is part of a lecture series titled “Deep Science for Everyone” presented by the Sanford Underground Laboratory at Homestake.

DeSalvo, who has installed instruments underground at the Sanford Lab as part of an experiment to prepare for a much larger, ongoing study of gravity waves, will present “Gravity for Everyone.” He promises “just a little astrophysics for friends and neighbors – no math, no formulas, just pictures and fun.”

Everyone is encouraged to attend this no-cost event to learn a little more about gravity and have a lot of fun in the process. For more information call 722-8650, extension 225, or visit http://sanfordlaboratoryathomestake.org.