Me? To lazy to check for myself? Never!
Simple question, really. After you have beaten a space object into submission and are receiving regular tribute therefrom, if circumstances change in such a way that the spöb in question no longer exists, do you still get the tribute money?
Actually, I guess it's not so simple of a question, as there are several cases to consider, and I would like answers for each of them:
Case 1. One s˙st is replaced by another with a different spöb. In the stock Nova scenario, this is like Earth (130) being replaced by Earth (426). So... if you beat the first Earth and are getting 10k/day, then you proceed to a point in the game where Sol changes, do you keep getting tribute? And if you beat the new planet, do you get both tributes?
Case 2. A spöb is destroyed, as by a planet-type weapon.
Case 3. Um... any other case I haven't covered.