An exoplanet in the habitable zone like Kepler 22b is found in a near future in which we're able to establish that it would be habitable. Competing nations rush to send a mission to it on the grounds that first there gets first dibs and potentially could end up with an entire planet as an extension of their nation state. Twist though is that it takes so long to travel there that its a multi-generational voyage and when they arrive they find that the planet was populated centuries before by a competing nation that developed faster space travel in the intervening time.
(, Thu 23 Sep 2021, 12:46, Reply)
(, Thu 23 Sep 2021, 20:45, Reply)