The McAuliffe-Shepard Discovery Center brings visitors up close to objects like this vintage 1956 XF8U-2 Crusader Jet tested by John Glenn and Alan Shepard before being selected by NASA.  Greater Concord Chamber of Commerce. 

Edward Ainsworth, 10, of Sheldon, Vt., runs back to his grandmother and sister before settling into his planetarium seat to watch Christa McAuliffe: Reach for the Stars at the McAuliffe-Shepard Discovery Center on Saturday, Jan. 23, 2016. (ELIZABETH FRANTZ / Monitor staff) Edward Ainsworth, 10, of Sheldon, Vt., runs back to his grandmother and sister before settling into his planetarium seat to watch “Christa McAuliffe: Reach for the Stars” at the McAuliffe-Shepard Discovery Center on Saturday.  ELIZABETH FRANTZ