Who will service Hubble telescope?

Answer 1

With the last HST Servicing Mission completed, and the last Shuttle mission coming up this month (July 2011), there won't be any more servicing missions to HST, unless there's a breakthrough in new space vehicle technology that would permit it, and funding was authorized. Having worked the HST program for 9 years, I can honestly say the odds are slim and none that it will ever be visited again. HST was specifically designed to be captured and serviced in the Shuttle's payload bay; it would require an enormous amount of design for a new vehicle to accomplish the same task.

With the predicted completion / launch of the James Webb Space Telescope in the next few years, HST will likely end by it controllers navigating it to a planned de-orbit burn over the Pacific or Atlantic Ocean when its systems are no longer usable. This isn't something new; HST has far exceeded its predicted life span of 15 years, and a de-orbit burn at its end-of-life has always been planned.