How far away is edge of galaxy?

Technically the galaxy has no edge because it is a lose gathering of stars held together by the pull of gravity. One object on the outskirts of our galaxy is 2.44 billion light years away from us. This means that if we were to travel at the speed of light, an impossibly incredible speed, it would take 2.44 billion years for us to

reach it. The object is a quasar called 3C 273