Conventional rockets will not take humans to the stars; interstellar travel requires advanced propulsion, from solar sails to antimatter drives. Les Johnson, NASA rocket scientist, will join Interstellar Seminar from 2:30 to 3:30 p.m. Wednesday, Feb. 28 in 104 Jabara Hall or online via Zoom. Johnson is a leader in the Interstellar Research Group, a true futurist. In addition to being a physicist and mission scientist, Johnson writes popular books on interstellar travel and science fiction novels. Learn more and find the Zoom information