earth and the universe

[Darkover]

1 meter = 1,000,000,000 nanometer
1 millimeter = 1,000,000 nanometer

the circumference of the earth is 40,075,000 meters or 40,075,000,000,000,000 nanometers
the radius of the earth in meters 6,371,000 meters or 6,371,000,000,000,000 nanometers

enclosed volume of a sphere V = 4/3 * 6,371,000,000,000,000^3 *pi
equals 1.08×10^48 or
1,080,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

The number of atoms in the world is around 1.3 x 10^50.


300,000,000,000,000,000 nanometers the speed of light in nano meters per second
94 billion light years to meters
94,000,000,000

How many seconds are there in a year of 365 days? 31,536,000 seconds
300,000,000,000,000,000 the speed of light in nanometer times the number of second in a year
equals
9,460,800,000,000,000,000,000,000

How many meters are in a light-year?
9.461e+15
9,460,730,472,580,800 metres
9,460,730,472,580,800,000,000,000 nanometers travel in one year at the speed of light
9,460,730,472,580,800,000,000,000*94,000,000,000 94 billion light years
equals
889,308,664,422,595,200,000,000,000,000,000,000 how wide the universe is in nanometers
889,308,664,423,000,064,616,544,040,104,848,432 how wide the universe is in nanometers

it would take this many seconds to travel from end of the unverise to the another or 34 trillion days at the speed of light
2,964,362,214,743,333,548 seconds
/86400 convert from second to days
equals
34,309,747,855,825 days

 

[Pluto]

Because the universe expands at a rate much faster than the speed of light, it would theoretically take an infinite period of time to travel from one side to the other (not accounting for some future 'big crunch'). Over eons, we would see fewer galaxies in the night sky as more of them cross the threshold where their light will never have time to reach us.