The Time dilation device was a device of Asgard design, conceived to artificially change the normal passage of time. The device was capable of generating a field radius of point-one-six light years. Within the bubble, time could be slowed down by a factor of ten to the fourth power. This means that one year within the time dilation field would be 10,000 years for everyone else (an hour would be over a year, and so on).