In the 1990s, NASA designed an experimental space plane meant to be a cost-effective alternative to expensive rockets. Called the X-33, it was based on a concept called SSTO — or “single stage to ...
Why it matters: Back in the 90s, NASA had a bold vision: to develop a reusable space plane called the X-33 that could dramatically reduce the cost of launching payloads into orbit. However, the agency ...
Silbervogel - the Nazi “Silver Bird” that could have changed the course of history - designed to launch from a rocket sled, climb into near space, and skip across the atmosphere like a stone across ...
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