This initialism is often used in the sciences of astronomy, geology, and paleontology.
Billion by this convention (109) is often called a "thousand million" in the UK and a "milliard" in some other countries.
[2] For this reason, there is potential for some confusion, and some scientists prefer the unit Gya, while others prefer Ga (Giga-annum), however, bya remains in more widespread use.
This standards- or measurement-related article is a stub.
You can help Wikipedia by expanding it.This time-related article is a stub.