THE  UNIVERSE [BRAMHAND]

DEFINITION :-

                    The Universe is all of time and space and its  contents .The Universe includes planets , stars , galaxies , the smallest subatomic particles , and all matter and energy.

Some important details of Universe

1)    Age :- 13.799+ or – 0.021 billion years

2)    Diameter :- Possibly infinite ; at least 91 billion light years (28*10⁹pc)

3)    Mass :- at least 10⁵³kg {ordinary matters}

4)    Average density :- 4.5*10^-31g/cm³

5)    Average temperature :- 2.72548 K

6)    Main contents :- Dark matter (26.8%), ordinary ‘baryonic’ matter (4.95%), Dark energy (68.3%)

7)    Shape :- Flate with only a 0.4% margin of error.

ABOUT UNIVERSE

                 The Universe is customarily defined as everything that exists , everything that has existed , and everything that will exist.

According to our current understanding the Universe consists of three constituents. SPACETIME , FORM OF ENERGY , AND THE PHYSICAL LAWS that related them .

 

ETYMOLOGY :-

                         The word ‘Universe’ derives from the old French word ‘Univers’ .