This prompted by recently seen errors in books.

If you are writing SF involving interstellar travel, you need to know a few things about stellar types.

First off, the "colors" of stars used in descriptions by astronomers are *not* the actual colors. "Red stars" have more red in the spectrum, but are not what normal people would call red.
( Read more... )

This is a setiup I've been playing with for the Swarm shared universe ( Read more... )

Many years ago on the mailing list for the Traveller SF RPG there was a discussion on what people on a frontier world might use for power, especially in the early days ( Read more... )

Dec 14, 1972. At 2:54 pm PST, the last humans departed from the lunar surface.

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Dec 14, 1972. At 2:54 pm PST, the last humans departed from the lunar surface.

How long before we return?

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This is going to be looking at things from a combination of contemporary tech (and reasonable extensions thereof) and future tech based mainly on the Traveller RPG. It's probably easily adaptable to other backgrounds ( Read more... )