Shedding light on DARK MATTER .
O n the clear starry night how many stars are you able to see at sky, hundred ,thousand may be lakh ,let me tell you if you take a needle and hold it against the sky from the tip of the needle you can see at least 1000 to 2000 galaxies . That much amount of matter is there in the universe. well you,me,your family,earth,planets,stars, galaxies and all the matter which is visible to your eyes comprises of only 5% of the universe. Yes! you read it right only 5% credits : North Western university so, what is there,hiding behind the darkness of the space. In early 1990's scientists studying the expansion of the universe generated a theory , the universe is full of matter and the attractive force of gravity pulls all the matter together hence instead of expanding universe had to slow down. Then came 1998 and the observation from hubble space telescope of distant supernovae proved that universe is not slowing down instead the expansion of the universe is accelerating . That obs