Mark Rober, a NASA engineer-turned-internet celebrity whose hugely popular videos celebrate problem-solving, determination, and having fun while learning, will deliver the address at the OneMIT Commencement Ceremony on Thursday, June 1. Also an entrepreneur and educator, Rober is best-known for his successful YouTube channel, which hosts videos with title such as “Egg Drop From Space” and “Can You Swim in Jell-O?” While the topics are light-hearted, each video explores some aspect of science or engineering. The approach has found success; the channel has 23 million subscribers and more than 3…