From Murchison Road, turn right (if heading away from downtown) or left (if heading towards downtown) at the light for W.T. Brown Drive (the main campus entrance). Go up the hill, and the last building on the left before you reach the stop sign is the Lyons Science building (it is the building without the brick facade). If you are driving a school bus, stop here to drop your students off. The door on the left side of the building (across from the fire hydrant) is the hallway for the Planetarium.
To park, proceed past the stop sign and across the railroad tracks. Make the first right (Mary T. Eldridge St.) and park at an available spot. Allow time for parking, especially for morning shows.
For more information about campus buildings and parking, select "Lyons Science Building" (not Lyons Science Annex) and there will be a link with a Google map for the campus, as well as a parking map.