Hubble question

Sorry for the OT question, but this has been nagging me for some time.

Hubble is in orbit around the earth, and as such, travels at a great
speed as well as constantly changing its direction of travel (nature of
a circular trajectory).

How does it take pictures of very faint objects without having any blurr
due to its movement or change in orientation due to its orbit ?

Or is its CDD sensor (or whatever technology used to capture images) so
sensitive that it only needs a very short exposure time to capture those
images and thus the speed of Hubble is of no consequence ?