As reported in this Icarus Interstellar link, there's a natural effect of our sun's (or any star's) gravity that should be included in realistic science fiction stories. It turns out that the sun's gravity bends space enough, and thus the light passing though space, to allow a space telescope or a space telecommunications array to get a significant boost in resolution. So every spacefaring race (or nearly every) would naturally build stations at a sufficient distance from their star to make use of this natural gravitational effect, receiving a huge boost in gain essentially for only the cost of putting the arrays or telescopes in place. You'd probably need multiple stations of this type, at various points around the sun, because the focus would naturally be on things on the other side of the sun relative to the station. And the distance is far, around 700 AUs from the sun, so it wouldn't be easy to shift a station from one side of the focus to another. (Fo...
Thoughts on stories, the universe, and everything.