'Apollo 13' movie snubs Canada

"GreenTiger" said
I'm glad Canada helped. I'm not sure how, but thank You.

On April 13, 1970, an oxygen tank exploded as the spaceship was four-fifths of the way to the moon. The crew was forced to scrap the moon mission and focus solely on getting back to Earth alive.

The plan involved the crew members moving from the service module, which was hemorrhaging oxygen, into the cramped, frigid lunar lander while they rationed their dwindling oxygen and electricity.

Using the lunar module as a lifeboat, they swung around the moon and aimed for Earth.

The professors from the University of Toronto�s Institute for Aerospace Studies were called upon by Grumman, a major contractor on the lunar program, to make crucial air pressure calculations needed for the strategy.

With very little data and no computers to rely on, the engineers were able to make the calculation and report it back to NASA.