What are similarities between Apollo 13 and Apollo 11?

Both Apollo 13 and Apollo 11 were pivotal missions in NASA's Apollo program, showcasing human ingenuity and resilience in space exploration. Each mission involved a spacecraft traveling to the Moon, with Apollo 11 successfully landing astronauts on the lunar surface, while Apollo 13 faced a life-threatening crisis that prevented a landing but demonstrated effective problem-solving and teamwork. Both missions contributed significantly to scientific knowledge and technological advancements, reinforcing the importance of safety and preparedness in space travel.