Black Hole

 

What is a Black Hole? 

Black hole is one of the most mysterious and powerful forces in the universe. A black hole is where gravity has become so strong that nothing around it can escape, not even light. The mass of a black hole is so compact, or dense, that the force of gravity is too strong for even light to escape.

Can we see them?

Black holes are truly invisible. We can’t actually see black holes because they don’t reflect light. Scientists know they exist by observing light and objects around black holes. Strange things happen around black holes to do with quantum physics and space-time. This makes them a popular subject of science fiction stories even though they are very real.

Must Read: The Planet Earth and the Universe

How are they formed?

Black holes are formed when giant stars explode at the end of their life cycle. This explosion is called a supernova. If the star has enough mass, it will collapse on itself down to a very small size. Due to its small size and enormous mass, the gravity will be so strong it will absorb light and become a black hole.

Black holes can grow incredibly huge as they continue to absorb light and mass around them. They can even absorb other stars. Many scientists think that there are super-massive black holes at the center of galaxies. Event Horizon

There is a special boundary around a black hole called an event horizon. It is at this point that everything, even light, must go toward the black hole. There is no escape once you’ve crossed the event horizon!

Who discovered the black holes?

The idea of the black hole was first proposed by two different scientists in the 18th century: John Michael and Pierre-Simon Laplace. In 1967, a physicist named John Archibald Wheeler came up with the term “black hole”.

Also Read: Milestones in Space Exploration

Fun Facts about black holes

  • Black holes can have the mass of several million suns.
  • They don’t live forever, but slowly evaporate returning their energy to the universe.
  • The center of a black hole, where all its mass resides, is a point called a singularity.
  • Black holes differ from each other in mass and their spin. Other than that, they are all very similar.
  • The black holes we know about tend to fit into two size categories: “stellar” size are around the mass of one star
    while “supermassive” are the mass of several million of stars. The big ones are located at the centers of large galaxies.

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6 Comments

  1. If a big ones black whole is located in the centre of galaxy then why don’t it attract all the object around it and eventually even earth one day should reside in the black whole… But it doesn’t happen . Why???

  2. Well said buddy…. But u didnt come up with smthing new.. Yes black hole is nthing bt a singularity…. Bt i wud lyk to tl u its jst arevrsal of the big bang theory…. Universe was also created frm a singularity. And as far i knw. The black holes u r tking abt r the oldest star present in the universe. So the turned into black holes due to their limited lyf… Which is fixed fr evry star as far i knw. And 1 mr thing……!! Singularity remains evry whr… Fr exmpl… Fr ur knwldge… Bermuda triangle is an example as u dnt hv ny explnasn fr tht…. Nd if u really wnna knw abt singularity…. Follow me…

  3. Well said buddy…. But u didnt come up with smthing new.. Yes black hole is nthing bt a singularity…. Bt i wud lyk to tl u its jst a revrsal of the big bang theory…. Universe was also created frm a singularity. And as far i knw. The black holes u r tking abt r the oldest star present at the cnter of universe. So they turned into black holes due to their limited lyf… Which is fixed fr evry star as far i knw. And 1 mr thing……!! Singularity remains evry whr… Fr exmpl… Fr ur knwldge… Bermuda triangle is an example as u dnt hv ny explnasn fr tht…. Nd if u really wnna knw abt singularity…. Follow me… Talking deeply if u hv evr heard abt the word consiousness…
    It hs the bst answr fr all. As it hs all the answrs 1 needs.

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