HackerTube / Video
The Three Rocketeers-2012:BBC-Future of Space trav
FirstSecondThoughts

A BBC Four documentary following Alan Bond and Reaction Engines as they pursue the Skylon spaceplane and its SABRE engine. It covers the history from HOTOL and the heat-exchanger breakthrough.
Linked in Reaction Engines threads as the story behind the engine, though one commenter is skeptical of the company's funding record.
5 Hacker News mentions · 2012–2015