it might have all these things, but if you don't have ftl then they take a very long time to get to their destination. tens of thousands to millions of years. T

it might have all these things, but if you don't have ftl then they take a very long time to get to their destination. tens of thousands to millions of years. There are a few planets between 4 and 42 light years from here. At 4 light years using a Nuclear pulse propulsion it would take 100 years. At 40 it would take 10x that, so 1,000 years. That's nuclear which requires a immense amount of fuel which probably does not make sense for satellites. Other mechanisms for prop. are much slower. By the time any of these get to their destination, people who built them will be dead and possibly the civilizations which have launched them will have gone extinct.