There Might be a Black Hole in our Solar System
Channel: Imagination
Date: 2020-07-11

Hello World,
I'm Imagination.
Today I am going to talk about Black holes, There might be a Black hole in our Solar System.
But, Do you know what is a black hole?
A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

You may have heard about Planet Nine—a hypothetical planet thought to exist in the outer reaches of the solar system. One possibility is that it’s not a planet at all but a tiny black hole. New research outlines a potential strategy for detecting this supposed black hole, in a search that could begin as early as next year.
A new paper by Harvard University undergraduate Amir Siraj and theoretical astrophysicist Avi Loeb suggest that a new telescope currently being constructed in Chile could hold the key to discovering whether there is, in fact, a black hole located in our own solar system.

The reason for thinking a black hole might be lurking out there has to do with an unexplained set of astronomical observations. Something—we don’t know what—appears to be affecting a group of objects beyond the orbit of Neptune. A possible explanation is an undetected planet, dubbed Planet Nine, with a mass between 5 and 10 Earth masses. Recently, scientists proposed another explanation: a primordial black hole of a similar mass.
That we could have an ancient black hole inside our solar system is not as outlandish as it might sound. 
As Loeb explained, primordial black holes may be responsible for what scientists think is dark matter in the universe. If that’s the case, there should be a tremendous number of black holes out there, so it’s not foolish to think one of them got trapped in our solar system.

“This will obviously be extremely exciting since we have been searching for the nature of the dark matter for nearly half a century, “If the black hole is the dark matter, there should be 50 quadrillions like it in the Milky Way alone to make the entire mass of the Milky Way galaxy, which weighs a trillion solar masses.” wrote Loeb in an email.

Now they have suggested that it would be possible to test that theory by looking for "accretion flares". The discovery of those flares would allow scientists to know for sure whether "Planet Nine" is actually a black hole.
“In the vicinity of a black hole, small bodies that approach it will melt as a result of heating from the background accretion of gas from the interstellar medium onto the black hole,” said Amir Siraj, “Once they melt, the small bodies are subject to tidal disruption by the black hole, followed by accretion from the tidally disrupted body onto the black hole.”
That would be the only way to see any black hole – because their nature means they cannot be otherwise seen.
Professor Loeb said:
“LSST has a wide field of view, covering the entire sky again and again, and searching for transient flares, Other telescopes are good at pointing at a known target but we do not know exactly where to look for Planet Nine. We only know the broad region in which it may reside.”
“The outskirts of the solar system is our backyard. Finding Planet Nine is like discovering a cousin living in the shed behind your home which you never knew about, It immediately raises questions: why is it there? How did it obtain its properties? Did it shape the solar system history? Are there more like it?”
What do you think about this? please let me know in the comments below. 
That's all for today.
Thanks for watching.