space exploration, No Man's Sky game, procedurally generated universe, 18 quintillion planets, diverse ecosystems, vibrant colors, alien flora, exotic fauna, rocky terrain, gas giants, ice worlds, lava planets, ringed planets, space stations, starships, astronauts in spacesuits, scanning for resources, interstellar travel, cosmic phenomena, nebulas, asteroid fields, black holes, wormholes, dynamic weather, day-night cycle, panoramic view, soft ambient lighting, high-resolution textures, detailed surfaces, 3/4 perspective, vast open-world, science fiction theme.