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TIME DILATION

TO THE FUTURE Have you ever thought of time traveling? Trying to know about your future? What will happen next? How would you look when you become old? I'm pretty sure you have. And you also might have thought that it would be practically impossible. But there was a man who once traveled through time. He is Sergei Krikalev, was a Russian astronaut, has a record of 803.371 days spent in space. He actually traveled through time to his future by 0.02 seconds. Here, what he experienced is not time traveling but time dilation.                                        TIME DILATION There are many ways to explain time dilation. It can be said as the difference between the time in two clocks, each having their individual velocity or the difference between Gravitational potential between their locations. To be put in simple words, time dilation is the process of slowing down the clocks bec...

WHAT IS A BLACK HOLE ?

WHERE TO BEGIN There are many mysteries about the birth of the universe, its evolution.  But the most important and dangerous mysterious thing is a black hole .  But nobody has ever seen it.  This black hole has the capability to take away even a big planet.  Whatever the thing that once entered into a black hole can never be returned.  The thing that comes closest to this black hole can be swallowed by it.  How much powerful a black hole is,  it can make light travelling at a speed of 3 lakh kilometre per second towards it. And now you will know  - what a black hole is? How does it grow? What will happen to an object that enters into a black hole?                                  STABILITY OF A PLANET Hydrogen is the reason for a star to illuminate brightly.  These hydrogen atoms convert into helium in the process of nuclear fusion and release an enormous am...