4 ms·

I myself can't remember seeing Gy in astronomical papers, but I've seen Ga (gigaannum). https://en.wikipedia.org/wiki/Year#SI_prefix_multipliers https://en.wik

by gattr 5y ago

I myself can't remember seeing Gy in astronomical papers, but I've seen Ga (gigaannum). https://en.wikipedia.org/wiki/Year#SI_prefix_multipliers https://en.wikipedia.org/wiki/Year#SI_prefix_multipliers

timthorn 5y ago
Ga is indeed used as well. https://en.wikipedia.org/wiki/Billion_years https://en.wikipedia.org/wiki/Billion_years