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| Fifth Giant | |
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| Name of Planet | 5th giant |
| Date of Discovery | Hypothesized on 2011 |
| Distance from Sun | >25 light-years or orbiting the sun(planet 9 if exist) |
| Diameter | 50,000 kilometers? (Indetermined) |
| Orbit | Probably not even orbiting If orbiting, then 15.000 years. |
Ignore the code above, it is leftovers.
The Fifth Giant is a hypothetical planet, proposing that this was a planet orbiting between Saturn and Uranus. Eventually after a while it soon then got to close to Saturn, causing Jupiter and Saturn's gravity pushing it out of the Solar System. It was ejected by Jupiter and Saturn an estimation of around 4.5 billion years ago. It is thought to have been an ice giant, similar to Uranus and Neptune.
Formation[]
Just like the other planets, the Fifth Giant's core could have formed from a dense clump of rocky and gaseous material around 4.5 billion years ago along with Uranus and Neptune. Its rocky core's massive gravity attracted more gas and particles from the nearby vacuum and became a Jovian ice giant itself around 4.5 billion years ago.
Atmosphere[]
Because Fifth Giant hasn't made any contact with human technology yet, scientists aren't sure what kind of compounds the Fifth Giant was composed of. But there's a theoretical explanation that the Fifth Giant was formed out of the same materials as Uranus and Neptune, like hydrogen and helium, methane, ammonia, rock, and a few traces of ice and water.
Ejection[]
The Fifth Giant was ejected during the Migration of Neptune event that took place 4.49-4.47 billion years ago and also because the Fifth Giant didn't have a much stable orbit unlike the other Jovians, it became uncooperative with Jupiter and Saturn's gravitational pull and was ejected out of the Solar System.
Because the Fifth Giant hasn’t yet been found elsewhere in the Milky Way, there are many theories that suggest what happened to the missing planet. One theory suggests that the Fifth Giant was ripped apart because of the lack of the gravitational pull from a parent star a few thousand years after it was ejected. Another theory suggests that it was captured by a nearby star system and became an exoplanet in disguise, and many think that it's already been discovered but we just don't know it yet. One other theory suggests it could be Planet Nine, orbiting far, far away.