Book 7 for my 2025 goal of 30 books for the year!
I love a good science fiction story that really leans into one of the weird aspects of modern physics, and so as soon as I learned the premise of Poul Anderson’s Tau Zero (1970), I knew I had to snap it up and read it!
(I am again taking advantage of the decent quality and dirt cheap SF Masterworks editions of books. I found this one for $7.00 at 2nd & Charles.)
The book is centered around a premise from Einstein’s special theory of relativity: the idea that clocks move slower while in motion, and the slowness increases the closer the speed approaches the speed of light. I’ve blogged about this before, noting that it is in principle possible to move fast enough that a journey of a million light years could seem to take ten minutes — even though a million years would pass on Earth!
In the book, a colony spaceship is sent from Earth on a journey to a planet some thirty light years away, which will only be five years for the crew on board, moving at a relativistic speed. But on the way, an unexpected disaster strikes, disabling the drives that will decelerate the ship. With no way to slow down, a daring plan is proposed — go even faster, pushing ever closer to the absolute speed of light, in the hopes of reaching a location where the deceleration drives can be safely repaired. This will involve spending aeons of time relative to Earth, first hundreds of thousands, then millions, then billions of years. Along the way, the crew will have to hold together under the psychological strain of being isolated for years at a time, with no certain future…
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