Bruce Perens via Starlink <starlink@lists.bufferbloat.net> wrote:
    > Once upon a time, there was a thing called Orion, which was supposed to be
    > a big heavy shield that would be propelled into space by setting off atomic
    > bombs on one side of it. Lots and lots of bombs. At some point people
    > thought they could make a shield good enough. What SpaceX puts in now is
    > going to be the closest we have come to Orion, just upside down.

For fun, read Charles Stross' Merchange Princes series.

Book "9", _Invisible Sun_, while a bit uneven, includes their Orion spacecraft.
They have the advantage that the can Jaunt to alternative universes before
doing all the atomic bombing, and then, once in orbit, Jaunt back.

ISS Astronaut in time line 2 (US) should have been given the line: "That's
not the moon"...