Mad Science will host a free worldwide online event, Blast Off with Mad Science, on June 5, 3PM-4PM, featuring four space-themed experiments you can do at home during the webinar, plus a Q&A session with former NASA astronaut Barbara Morgan. Space is limited, and registration is first-come, first-served. For more info, call 781-806-0472 or email info@MadScienceNorthBoston.com.