earth's second home: a sustainable space colony on exoplanet kepler-438b

earths second home sustainable space colony exoplanet kepler438b distant planet kepler 438b earth 039 artist impression advanced technology habitable resources living environment inhabitants towering spires lush greenery humanity future unending quest frontiers exploration colonization exoplanetary architecture resource management symbolism expansion environmentally friendly interstellar human settlement futuristic civilization interplanetary habitation eco extraterrestrial galaxies travel aigenerated