Faster-than-light travel. Hyperspace travel is the most common type of F.T.L. in the Stargate universe, but it is not the only type. The Ancient exploratory vessel Destiny uses a never-before-seen kind of F.T.L. travel.

The Asgard also appear to have possessed F.T.L. travel that is much faster and more efficient than hyperspace (though their ships could travel in hyperspace, as well).

KEY EPISODES

Unnatural Selection - The Asgard demonstrate their F.T.L. technology by towing the Earth ship Prometheus back to Earth in a matter of seconds, then to the Asgard home galaxy in just a few hours.
Air, Part 1 - Evacuees from Icarus Base discover that they are on board a ship traveling faster-than-light, but not in hyperspace.