Aspirantship

  Question – 02 A. Describe different methods to estimate the age of the Universe. Answer: Universe The totality of everything that exists or has existed both in space and time, including all matter and energy, planets, stars, and galaxies, is known as the Universe. Methods to measure the age of the universe There are two methods scientists rely on for calculating the age of the universe which are the following 1- Calculating the expansion rate of the universe: According to scientists, the universe is approximately 14 billion years old. It is the age of the universe that is estimated from the big bang.  According to this method, we assume that the universe is expanding at a constant rate by using Hubble’s constant (Ho). Hubble noted that the distance of a galaxy is directly proportional to its speed, and means. The further the galaxy was, it was moving away. d=vt t=d/v where, v= Hod t=d/ Hod t=1/H Hence, scientists were able to use the Hubble constant to ...