Samford University will observe homecoming Oct. 26-28. Pre-homecoming activities begin Oct. 25 at 6 p.m. with a parade through downtown Homewood celebrating Homewood’s 75th anniversary and Samford 160th anniversary. Activities planned for Oct. 26 include: Dedication of Samford’s new science center 5-8 p.m. Kathie Olsen, chief scientist with NASA, will speak at 5 p.m., along with tours of the planetarium…