It lasted more than a few years
Probably a few million years. Most likely many years, due to Evolution. :P
Although uncommon, it happens, and it can last anywhere from a few seconds to a few years. There is a storm on Jupiter has lasted 300 years. So, it can happen for unknown periods of time.
No it takes a very long time for gas to be renewed
They can stay active for hundreds of thousands to a few million years.
it went on for a few years
She's supposed to sleep for 100 years but i dont know how long
a few years
A few hundred years.
a few million years
a few years
Some are light years long and some just few thouand miles long
a few years. it have some sweet tech.
at least a few years
for another few million years
a few thousand years
at least a few thousands years