Astronaut Mike Massimino peers into the space shuttle from outside the craft on May 17, 2009, during one of the mission's five successful spacewalks.
The repairs and improvements made during the mission should allow Hubble to continue observing the cosmos for another five to ten years.
While Hubble is famous for bringing spectacular space pictures to Earth, the view from Hubble is also amazing, Massimino said.
"Theres nothing that can prepare you for going out there and having an unobstructed view around your helmet," Massimino said. "You really see [Earth] as a planet ... it's just so spectacular to view that."