Is Planet 9 a Black Hole?

The first photo of a black hole. Taken by the Event Horizon Telescope.

via. flickr

The first photo of a black hole. Taken by the Event Horizon Telescope.

Recently, there have been many groundbreaking discoveries and breakthroughs in the field of astronomy; among these breakthroughs are the recent photographs of black holes. Until April 10th, 2019, astronomers had never taken any pictures of these celestial beings. After the elusive black hole was finally captured on camera, many people have learned what a black hole is, and they aren’t just objects used in science-fiction novels. In addition, astronomers also have evidence that there is a ninth planet in our solar system because of a strange pull to Neptune and Uranus’ orbit. As well as the bizarre pull, some objects in the Kuiper belt (a belt full of asteroids, dwarf planets, and space dust beyond Neptune) have an orbit that suggests a strong gravitational pull.

A black hole is an astronomical object compressed to the point that it cannot get any smaller, the black hole then has such a tremendous gravitational force that not even light (the fastest known moving particle) can escape. The black hole will pull anything inside its event horizon into its center, and astronomers don’t know what happens after that.

There are three different types of these gravitational anomalies. One called a “stellar-mass”, the other dubbed “supermassive,” and the third category is an intermediate black hole. A stellar-mass black hole is a black hole that is created when a large star 5 or more times the mass of the Sun reaches the end of its lifespan. It then collapses and forms a black hole. An intermediate black hole can be created in two ways, the first is for an extremely massive star to collapse in itself, and the second way is when two stellar-mass black holes collide with each other. The last type of black hole is called a supermassive black hole. These tend to exist at the center of galaxies (There is one at the center of the Milky Way galaxy called Sagittarius A). 

Although there is relatively good evidence to there being a planet nine, it’s not certain. However, who said that the ninth celestial body in the solar system had to be a planet? What if it was a black hole? If there is a celestial body past the Kuiper belt that would have the extreme gravitational effect on some objects in the Kuiper belt as well as a slight variation in the orbits of Uranus and Neptune. If this theoretical black hole is the mass of Jupiter, its radius would be about 2.2 meters (there is a complicated math equation determining a black hole’s radius, it’s size is called the Schwarzchild radius).

The odds that there is a black hole the size of a door out in the solar are microscopic, as we would have most likely detected the gamma-ray bursts that are emitted from black holes. There is no way to tell if there is a ninth planet until there is some conclusive proof that makes it obvious that there is another body in the solar system.