The Long Way Home

I went hunting through the used bookstores the other day, and came out with Poul Anderson's 1958 novel The Long Way Home. It's about a group of explorer-astronauts who are trying out an experimental new spacedrive- by taking a trip several thousand light-years away.

Their experiments in the solar system seemed to indicate that the drive was instantaneous, so they're shocked and appalled when they get home and discover that 5000 years have passed. In retrospect, they realized that puzzling errors of measurement meant that the trip was only instantaneous for them.

You really have to take this with a grain of salt- it's the same kind of pulp-sf assumption that lets the Fantastic Four fly out into space solely on Reed Richard's smartness, rather than an organized mission plan with ground support from NASA. But if you can get past that, it's pretty good escapist fun.

The future, incidentally, is a stulified caste society with a computer overlord. Needless to say, Anderson's hero gets over his future shock and makes short work of everyone around him.