How much will space travel cost?

What group is Jupiter in? What components of the microscope make it difficult to transport from place to place outdoors? Where is the ceiling or end of the atmosphere? Who was the third astronaut to go in Apollo 11? Christian Huygens did he create the MODERN clock? Before 1700 most Western scientists thought the Earth was about 4.6 billion years old? Why do you get sun burn on a cloudy day? What is term for the process of gathering information through images taken at a distance remote sensing? Who was the Titan that Carried the Sky on his Shoulders? What spectral class does our sun belong to? Why everyone says the Sun rises and Sun sets when universally accepted that it is stationary? Does color affect temperature from the sunlight? Does the appearance or non appearance of the moon affect your daily activity? What is Galileo's contribution to the heliocentric model of the solar system? How did the Apollo 11 overcome gravity? Where was the hubble telescope built? What does the mars rover sense? What matches with radiant heat on the electromagnetic spectrum? Why are moons always smaller then the planets they orbit? What year did scanners come out?

How much will space travel cost?