Speed Of Light

Speed Of Light

      Perhaps all you have heard at least once the expression “Speed of Light”. If you are from those who know that this is something very fast but  do not know how much actually, I will say that it’s about 300000 km/sec or  670,616,629 mph (miles per hour) and that is the speed of the photon – the only particle with no mass, and will add that there is nothing faster than it. In fact, because we see thanks to photons that pass through our eyes,  if their speed was much more slower we would see everything around behindhand. It sounds...
We Are All Made of Stardust

We Are All Made of Stardust

  The story of the Universe began 13.7 billion years ago and now there are more than 100 billion galaxies with a trillions of stars. If it’s hard to imagine how many stars is this let me use a example to make this easier. Imagine that you are on the beach and scooped up a handful of sand. Can you guess how much grit you are holding at this point? Yes, the number is definitely big! Now imagine the count of all the grains of sand on Earth- in every beach, every riverbed, each marine or ocean bottom. In the...