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The earth is approximately 4.5 billion years old.Counting the years did not start until civilisation existed. It also depends on which calender you are using. (there are many)
In the year 3168 was the start of the Galaxy War on the planets of Ravvage, Earth, and the Moon.
NASA was established on July 29, 1958.
on October 4, 1957hope this helped. :)
To make the year start more or less in the same season every year, an extra day is added every four years.
The astrolabe was invented sometime in the first or second century BC.
What year did the vikings start
year 1980
*
1908
1960
1500s
1975 model year.
In the 1920s
1986
middle ages
2001