Eden

Eden is the 2nd largest of the 5 planets orbiting Solaar, and is the most biodiverse of all of them, with nearly 30,000,000 species of creatures so far discovered, and an assumed 1.5 million that have not been found. The planet is similar in composition to Earth, but with one key difference, Couronium, or GU. It is a radioactive material that seems to have been brought by a solar flare to Eden up to 3.6 billion years ago and is the reason why so many creatures can live that long, and grow incredibly big. The GU seeped into the water and caused more powerful bones, and an abundance of life, both plants, and animals. Why exactly does it cause those benefits, you may find yourself asking. It has to do with the radiation because the creatures on Eden have way different biology than organisms on earth, and the radioactive material can be absorbed by them and used as energy, thus giving them more energy to grow and evolve into the modern-day titans that they are. Along with helping life grow, it made the planets gravitational pull strong, due to the mass and weight of the element, which brought forth moons, Aaryios A, and Aaryios B. Eden has gone through several ice ages and extinction-level events throughout its long history, and after 2 billion years of emptiness, life sprung, and with 1000 years multicellular organisms had appeared all across the planet and within less than 4 billion years, there were the first sentient beings, the Aetherians. This race of humanoid beings quickly spread across the planet and made cities, and kingdoms, and whole countries, but then, a plague spread, the S-virus, that wiped out nearly the whole species before humans ever arrived. ever since then, Eden has been an empty planet, full of dangerous and beautiful creatures that might never be seen by humans, which might be a good thing. The planet Eden has been subject to many meteors that have crashed into the planet after Aros (A former planet.) was destroyed by the solar flares back in 40,000 B.C. (Earth time.) Now that the war of planets has ended, Eden has become a haven for all creatures, no matter size or intellect to thrive.