Space exploration is the investigation of outer space through the use of space technology and spacecraft. It aims to understand the universe, including celestial bodies like Mars, Jupiter, and exoplanets, and to search for signs of life beyond Earth. This field has led to significant advancements in science and technology, including the development of satellites, telescopes, and robotic missions. Notable missions include NASA's Apollo program, which landed humans on the Moon, and the Mars Rover missions, which explore the Martian surface for potential signs of life.