The Next Space Shuttle Was 90% Complete. Then NASA Killed It

Source: Wikimedia Commons

In 90s, NASA was thinking big — not Apollo programme big, but big nonetheless. By then, the now legendary space shuttle was coming to be around two decades old, had served reliably on 34 missions and was a marvel of 20th Century engineering. NASA however, was already looking at the next logical technological step after the Space Shuttle: SSTO.