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What Happens to Something if It Disappears in a Black Hole, and Can You Retrieve the Information It Held.
Black Holes are pieces of space that can or do contain large masses of matter. They can range from the size of Manhattan containing three to four suns (which should tell you how much they can hold) to being able to hold 20 billion suns, making our galaxy look like a pea compared to it. Most galaxies happen to have a back hole in the middle. Our galaxy does, but that doesn't mean were going to get sucked into a black hole. If you watch the below video, you would know that you would have to be too close, which is about 93 million miles. The reason black holes suck so much is because the gravity inside of one pulls so much that not even light can escape. They form when a star collapses on itself.. People, unfortunately can't see black holes. The size of a black hole doesn't describe how much mass it can hold. A atom sized black hole can hold as much mass as a large mountain.
Types of Black Holes
There are three types of black holes. Each was formed in different ways, and each hold more mass.
As mentioned before, the smallest black hole can be the size of an atom but still hold things bigger than whole towns. They are still dangerous to us, but of course there aren't any near us that would be a problem. Scientists think that these small black holes formed when the universe began.
The next biggest black holes are called Stellar black holes. These big black holes can hold up to 20 times the mass of the sun. In our galaxy there are lots of these, but scientists cant be sure. Stellar black holes form (also as mentioned before) when the center of an extremely big star collapse one itself. This creates a supernova, which is an explosion that shoots a piece of the star into space.
Finally, the very biggest black holes are called supermassive black holes, which says something about how big they are. These can hold a millions of suns. They, luckily don't form, except for when a galaxy forms. This makes sense, because every galaxy holds a supermassive black hole at its center. This includes our galaxy, which has a black hole (Sagittarius A.) that can hold around 4 million suns.
Are Black Holes Dangerous To Us?
Are we in danger of black holes? This is a question that people constantly ask themselves. The direct answer is no. The sun, which is the closest danger to us of getting sucked up by a black hole, could collapse and turn into a black hole. But scientists say that it probably wont turn into a black hole, and even if it can, that will be around 6 billion years from now.
Other chances of being the earth being sucked up have to do with the center of our galaxy. The center of our galaxy, in my opinion, after doing so much research, isn't any threat to us. We would have to be significantly close to the center and we aren't close at all.
The final and most convincing way we would get sucked up is because Andromeda galaxy and the Milky Way are heading towards each other at the speed of 300,000 miles per hour. The collision would turn the two into one big galaxy. The super massive black holes in the center would each would turn into an extremely massive black hole. This is the only threat to us because Earth will be swallowed up by this black hole in an instant. This is only a theory though, and even so, it would happen in ten billion years.
The thing about black holes is that only a tiny bit of information is lost into the black hole. This, according to Physics World means that it can be used to perform useful calculations. The information that is able to be pulled from the black hole can only be pulled one tiny piece at a time though. This tiny piece is called a qubit which isn't a lot of information at all. To get the information, you need to get hawking radiation. Hawking radiation (named after Stephen Hawking) is a thermal radiation that scientists think comes out of black holes.
This piece of radiation can tell you a qubit of what's inside the black hole.
If you are into this article or really or interested in black holes or space in general I seriously recommend the two videos below and this site.