It is feasible. But there is a big but:
If you were travelling faster than light, then yes.
But you'd need to be travelling extremely fast.
For example, even when you look at the Sun from the Earth you don't actually see it where it is - you only see it where it WAS eight minutes ago because that is how long light takes to travel the short distance from the Sun to Earth.
If you magnify the distance you'd need to travel to get to a far galaxy in order to see Dinosaurs lolling around (which would be about 115 to 140 million earth years ago) then the maths works out that it would take you a massive 3,942,2000 times longer to see Dinosaurs from space than to see even the Sun in its wrong place 8 minutes ago.
Take a good packed lunch - you'll need it on a trip like that.
from 8 Light Minutes away to the 140,000 Light Years away (if you want to want watch Pteradons doing wheelies in the air on Earth) then you have a major problem since 140,000 Light Years (to the Dinosaur Earth period)
Supplement from 03/02/2007 11:34am:
Please ignore the last 3 stray lines after my comment - that was just one answer I was cooking earlier - should have deleted it but I hit the submit button too soon.