The Forgotten Planetoid

In a far-flung corner of our vast and mysterious universe, travelling serenely in its endless cosmic journey was an uncharted planetoid which bore the whimsical name- 'Poseidon'. Its existence was not recorded in any astronomical databases; no human telescopes had ever captured its enchanting visage, it was a wanderer in the cosmic ocean, alone and forgotten.
Poseidon was no ordinary celestial body. It teemed with a life of its own, peculiar and extraordinary. Bioluminescent flora canvased the landscape, endowing it with an ethereal glow. Its inhabitants were enigmatic beings, a magnificent interplay between plant and animal life, shapeshifting according to their surroundings. It was a world unlike any other, unrestrained by the realities known to humankind.
Poseidon was dominated by a single sprawling megatropolis, Poseidon City, home to the planetoid's sentient beings— Poseidonians. Advanced beyond our earthly comprehension, Poseidonians had evolved beyond physical forms, having their consciousness digitalized, resulting in an ageless society.
But Poseidon had a deep secret, nestled at its core. An ancient artifact, the 'Arcanum.' Posedionians speculated it was the planetoid's heart and the source of their consciousness conversion process. Yet, its true origin and purpose were lost in the unfathomable stretches of time. It was treated with veneration and curiosity that danced carefully on the edges of fear.
One day, Neptune, a young Poseidonian, dared to explore the Arcanum. He merged his consciousness with the relic, hoping to unearth its past. As he traversed through the vestiges of Arcanum's consciousness, he was swept away through history, witnessing the birth and decay of far-off galaxies, nebulous events of cosmic proportions, and to his surprise, images of an indigo planet teeming with life; Earth.
Intrigued by the unsuspected discovery, Neptune shared his mystical communion with the rest of Poseidon. The Poseidonians felt a pull, a deep connection with the inhabitants of Earth which they couldn't explain but decided to journey across the cosmos to reach their unknown brethren.
The journey across space could have spanned millennia, a practical lifetime for humans. But for the timeless Poseidonians, it was but a cosmic skip. As they neared Earth, they decided to maintain distance to first study the human civilization, and not shock them with an abrupt meeting.
Years transformed into centuries as Poseidon orbited silently beyond Pluto. During this time, they learnt about the earthLings, their victories, their despair, their art, and their horrifying wars.
After cajillions of cerebral discussions, Poseidonians finally made their approach to Earth in their majestic spacecraft, radiating a celestial glow, illuminating the endless darkness of space, stark against the ineffable beauty of the glistening Earth.
When their spacecraft made ground contact, governments around the world came to a halt, bracing themselves for the inevitable first contact. A holographic envoy from Poseidon stepped forward, transferring the collective consciousness of Poseidonians through a gentle touch.
In that moment, humanity experienced a cascading rush of emotions, memories, love, nurturing, knowledge, and peace that left them in awe. The Poseidonians, in turn, absorbed the raw emotions of humanity, their regrets, dreams, and desires.
Poseidonians shared their advanced knowledge, and Earthlings shared their richness of varied experiences. Thus sparked an era of cosmic brotherhood tranquility, where the children of Earth and the offsprings of Poseidon navigated the cosmic seas together, each learning from the other, growing, bonding, embarking on a journey of mutual ascendance.
Sometimes, the most profound lessons in life come not from familiar places, but from the unexplored corners of our existence, and it takes the courage of an entire civilization to learn from the lessons etched in their forgotten counterparts.