Altair System

1. Altair I is a small, rocky planet, closest to the star Altair. The intense heat from its proximity makes it uninhabitable but rich in minerals and metals. Robotic mining operations from the United Nations Federation have been established, extracting valuable resources for their expanding colonies.

2. Altair II is an arid desert world with extreme temperature fluctuations between day and night. There are a few hardy species of plants and animals that have adapted to these harsh conditions. Some research bases scattered across the equator study the unique lifeforms and weather patterns.

3. Altair III is the jewel of the Altair System. It has a similar environment to Earth, making it thriving with life. The United Nations Federation's largest city of New Geneva is located on the main continent. Altair III serves as a cultural, industrial, and commerce center for the UNF.

4. Altair IV is a barren planet, its surface marked by craters and deep ravines. Its thin atmosphere and harsh solar winds make habitation difficult, but below the rugged surface exist vast subterranean cave systems, believed to be remnants of ancient lava tubes. Some of these caves contain pools of liquid water, leading to speculation about potential life forms that might survive in this hidden underworld.

5. Altair V is a gas giant similar to Jupitar in composition but twice the size. The swirling clouds that cover its vast body are a spectacle to watch from afar. It has a rich array of moons, each with unique physical characteristics. Some are frozen solid, others volcanic and some even show signs of harboring life under their icy crusts.

6. Altair VI is the farthest planet and gas giant half the size of Saturn. It is shrouded in an ominous darkness due to its distance from Altair, and it bears a ring system that is splashed with a myriad of stunning colors