Questions you might have about Black holes | Part-2

 BLACK HOLE

• Types of Black holes 

Miniature Black Holes 

Micro black holes, also called quantum mechanical black holes or miniature black holes, are hypothetical tiny black holes, for which quantum mechanical effects play an important role. The concept that black holes may exist that are smaller than stellar mass Black holes was introduced in 1971 by Stephen Hawking.

Stellar mass Black Holes 

A stellar black hole is a black hole formed by the gravitational collapse of a star. They have masses ranging from about 5 to several tens of solar masses. We can then find them scattered throughout galaxies, just like you find massive stars. They typically have a mass a few times the mass of the sun.

Intermediate mass Black Holes 

An intermediate-mass black hole is a class of black hole with mass significantly more than stellar black holes but less than the supermassive black holes , often formed in the implosions that take place when massive stars explode as supernova.

Supermassive Black Holes

A supermassive black hole is the largest type of black hole, with mass on the order of millions to billions of times the mass of the Sun. Black holes are a class of astronomical objects that have undergone gravitational collapse, leaving behind spheroidal regions of space from which nothing can escape, not even light.

• What happens if you fall inside a black hole ?

If you fall inside a black hole you would most likely not survive either a small or a large black hole. Remember, light cannot even escape a black hole. From an outside perspective, time would slow down as you moved closer to the center of the black hole.

Astronomers have been studying black holes through the various forms of light they emit for decades. Although light can’t escape a black hole’s event horizon, the enormous tidal forces in its vicinity cause nearby matter to heat up to millions of degrees and emit radio waves and X-rays. Some of the material orbiting even closer to the event horizon may be hurled out, forming jets of particles moving near the speed of light that emit radio, X-rays and gamma rays. Jets from supermassive black holes can extend hundreds of thousands of light-years into space.

• Does black hole have an opening ?

It's just a theory that black hole does have an opening known as WHITE HOLE. The idea of white holes was fashionable for a time in the 1970s. People spoke of wormholes, with a black hole on one end and a white whole on the other. Could these wormholes be tunnels in spacetime through which intrepid travelers could journey instantaneously across vast distances in the universe? But further thought caused people to realize that white holes would be extremely unstable, and hence highly unlikely to exist, in fact so unlikely that no one has talked about them much in recent decades. They are truly fringe science. So far, no astronomical source has been successfully tagged a white hole.

Conclusion 

There are nearly 10 million black holes in milky way galaxy. Scientists have discovered the smallest known black hole in the Milky Way galaxy, they nicknamed it as 'the Unicorn. ' The researchers say that the black hole is roughly three times the mass of our sun. Smallest known black hole in the Milky Way galaxy.

In the next blog we'll be discussing about VOYEGER 1 space probe. It has overtaken all other spacecrafts and is now the most distant spacecraft with 22 billion km away from the Earth. Isn't that interesting ? 

Can we destroy a black hole ? I'll be talking about this in my upcoming blogs.