What is the fine-grained topic of the following text: Look at the voyager science package, knock it down by a factor of 10 to allow for 40 years of improvements and work out how much energy it takes to accelerate that to even 1% of C. That would tell you quite a lot about any planets it found, but how would it tell us about them? Only return the topic.
Calculating the energy for accelerating a miniaturized voyager science package to a percentage of the speed of light.