Movies usually take about a year just for the Behind the Scenes things, such as writing and casting, and then anywhere from a couple of months to about six months for the filming, plus another couple of months for CG.
Because of the critical and financial disappointment of Superman IV: The Quest for Peace (1987)
Clark Kent was BORN to be Superman. He was born Kal-el on the planet Krypton, whose red sun gave off less power than our younger, yellow sun. When he came to earth, earth's more power yellow sun gave him super-powers (a crazy theory, but there you have it!)
2 months so about 1560 hours
Long hunters were trappers and traders who made long expeditions into the American wilderness in search of furs. They were often gone six months or more at a time.
I think 4 weeks
Because of the critical and financial disappointment of Superman IV: The Quest for Peace (1987)
It isn't. The Earth will be here for a very long time, it's the humans that will be gone.
He Was Superman From Superman I-IV. Superman I Was Released In 1978 And IV In 1987 Making A Total Of 9 Years.
An ice age is a very long period of time when the entire earth gets cooler and then eventually returns to normal.
Superman wins again due to money and how long he's been out.
Technically no, but in practice it might as well be, since humans will be long gone from the Earth by the time it runs out.
Kryptonite robs Superman of his strength.
In the book, it did not explain how long he was gone. Only that he was gone for so long
Yes, I believe so. As long as the GL's will is strong, they would be able to beat Superman.
His whole childhood and teenage years.
Atlantis sunk in an apocalyptic event. It's long gone and forgotten.
Technically no, but in practice it might as well be, since humans will be long gone from the Earth by the time it runs out.