(If the live Google Map is not visible a static map is available here.)
1. Take I-182 to Pasco.
2. Take the Columbia Basin College/Tri-Cities Airport exit (N. 20th Ave)
3. Head north on N 20th Ave for 0.5 mi to Argent Road
4. Turn left at Argent Rd, head west for 0.4 mi
5. Turn left at the Farm Road entrance to the CBC campus, head south for 0.2 mi
6. Turn left at the planetarium parking lot entrance
A printable map and directions are available here.