How Cheap Can Spaceflight Become

Commercial spaceflight is currently only for the rich. It won't always be such - how low can the price get? Will you be able to buy a ticket in your lifetime?

During the development of the Space Shuttle in the 1970s, a number of Shuttle variants were studied by Rockwell, the contractor tasked with building the orbiters. One of them was a passenger module that could be carried in the payload bay, and would allow the Shuttle to take an extra 74 passengers to space

This was never developed; not only did the Shutt…