Perjalanan ke Mars, Bulan, bahkan orbit, akan mengharuskan kita memberikan kenyamanan sebanyak mungkin kepada para astrotouris dari rumah, termasuk saling membayar. Asli: Trips to Mars, the Moon, even orbit, will require that we provide astrotourists with as many comforts from home as possible, including paying each other.

— Buzz Aldrin