Create a vivid description of a massive spaceship that resembles a city. The ship should be elongated in shape and feature numerous portholes along its sides, giving the impression of life on board. The ship should have a docking bay on one side, where smaller vessels such as merchant and military ships can depart. At the rear of the ship, a cluster of orange-colored exhaust vents should emit a bright, vibrant light. In the background, depict a lush and welcoming planet with oceans and clouds, and describe it in precise detail. On the ship's hull, make the words "EARTH 221" stand out in bold letters. A similar ship should be visible in the distance, with the same characteristics. The overall atmosphere of the scene should evoke a sense of massive exodus, as if the ships are fleeing to find a new home. The image should be highly detailed and feature magnificent colors. Please generate a written description that brings this scene to life.
