How long is a gigayear? A gigayear, a billion years, is a common unit for cosmological times and time intervals, convenient, given that the current age-determination of the universe is between 13 and 14 gigayears. Abbreviations include Gy and Gyr.
How much is a gigayear? Gigayear definition
A billion (109) years.
What is a billion years in astronomy? Recent Clues
We found 1 solutions for Billion Years, In Astronomy . The most likely answer for the clue is EON.
How big is a billion years? A million is 106, or 1,000,000. A billion is one thousand million, or 1,000,000,000 (109). This is the common usage in English-speaking countries and is called the short scale.