USS Challenger
The USS Challenger is a starship in the fictional universe of Star Trek. It is a Galaxy class starship, like the Enterprise-D.
In an alternate reality, by 2390 the vessel was commanded by Captain Geordi La Forge. The Challenger was sent to stop Harry Kim and Chakotay from altering the timeline. However, the former Voyager officers were successful, and the alternate reality never happened.
External links
USS Challenger article at Memory Alpha, a Star Trek wiki