John Johnson, who earned his bachelor’s degree in physics in 1999 from S&T, will present “The Golden Age of Exoplanet Spin-Orbit Measurements” from 4-5 p.m. Friday, Oct. 23, in Room 104 Physics Building. Refreshments will be served at 3:40 p.m. in the hallway prior to the lecture. The Homecoming Colloquium lecture is presented by the physics department. Everyone is invited to attend.