Coming West on Speedway turn left onto Cherry just after Campbell.
Parking can be found on Hawthorne or 2nd street.
An alternative would be to turn south on Mountain from Speedway, turn left at the light on Second St. and turn right into the Mountain garage.
Below is a map of the imediate area around the Space Sciences building. The entrance is on the South West corner.
Room 309 is up the stairs and through the glass double doors.
More maps of campus and information about parking and construction can be found here