How long is a billion years?
A billion years or giga-annum (109 years) is a unit of time on the petasecond scale, more precisely equal to ...
Tag: one million seconds
How long is a billion years?
A billion years or giga-annum (109 years) is a unit of time on the petasecond scale, more precisely equal to ...
How much is a zillion?
Zillion may represent ANY very large power of a thousand, certainly larger than a trillion, and maybe even a vigintillion ...
How long is a billion years?
A billion years or giga-annum (109 years) is a unit of time on the petasecond scale, more precisely equal to ...
