Based on M33's rotation curve, have we reached the "edge" of the galaxy yet with these observations? Justify your answer.

180 Velocity (km/s) 160 140 . 120 . 100 . . 80 lo 60 40 20 1 -40 -20 0 20 40 60 80 100 120 140 160 180 Distance (kpc) -20 -40 180 Velocity (km/s) 160 140 . 120 . 100 . . 80 lo 60 40 20 1 -40 -20 0 20 40 60 80 100 120 140 160 180 Distance (kpc) -20 -40