Boreas(Fifth Giant) Was a hypothetical planet that was hypothesized to have collided with Uranus around 4.547 billion years ago, causing it to have a 98° tilt and eventually form its rings and natural satellites. It was hypothesized to be roughly 2 times the size of Earth. Collisions The boreas is likely to have been a large Uranus trojan that had an unstable gravitational stability and couldn't cooperate with Uranus's gravity, so the two planets collided with each other. This knocked Uranus out of its stable rotation and tilted it into rotating on its side. The debris leftover from the collision clumped together into a thin ring system, and also Uranus's 28 natural satellites. No traces of the boreas is found nowadays, only in Uranus's rings and moons. Formation It is likely that the boreas formed out of the same mixture as Uranus and Neptune, but couldn't develop a gaseous envelope likely due to the other Jovian planets attracting most of the gas. It is unknown what compounds and materials it was composed of, but it is likely that it was formed out of the same materials as what the other ice giants' cores are made of. It is theorized that the boreas was composed of silicate iron and nickel, with multiple layers of ice and a few traces of water and normal rock. Because of its abundance of water, if it was located somewhere between Earth and Mars, most of its ice could've melted and developed a global ocean with liquid water, making it habitable. Characteristics Name:Boreas Date Of Discovery:Hypothesized on 2011 Distance From Sun:19AU (Same As Uranus) Diameter:38226KM Radius:19113KM Orbit:Unstable
