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timeasmymeasure
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Date: 2005-04-19 03:40 pm (UTC)And rockets able to cross between stars are visible from light years away as long as the rocket is operating. This was one of many problems with Baxter's recent tale about stupid people who do stupid things who fail to reach the goals they knew could not be reached: his "stealthy" rocket should have been visible to _current day technology_ from about 10 light years but the first thing they did was race into the solar system to use Jupiter as a momentum booster. Morons.
I have run across a couple of books lately where the authors realised that telescopes work, something that appears to be something of a secret in SF. In both cases the authors exploited the fact that if you have FTL, telescopes can work as a time machine: if something occurred in the past that you don't quite understand, you can zip over to a location where the light from that event is only just arriving to get
a direct look at the event.