L1 is the Lagrangian point located between the Earth and the Moon, where the gravitational forces of the two bodies cancel each other out.

L3 is the Lagrangian point located directly opposite to the Sun, as seen from the Earth. It is also known as the anti-Sun point.

Spacecraft often park at L1 to observe the Sun because it is a stable location where the gravitational forces of the Earth and the Sun cancel each other out.

L4 and L5 are located at the vertices of an equilateral triangle formed by the Earth, the Sun, and the spacecraft.

L2 is the Lagrangian point that is located behind the larger body, in the direction opposite to its motion.

L2 is often used for spacecraft missions to Mars because it is a stable location where the gravitational forces of the Earth, the Sun, and Mars cancel each other out.

L5 is the Lagrangian point that is located in the same direction as the larger body's motion.

L4 and L5 are located at the vertices of an equilateral triangle formed by the Sun, the Earth, and the spacecraft.

Lagrangian points are significant in space exploration because they provide stable locations for spacecraft to park and observe celestial objects, allow spacecraft to travel between planets with minimal energy expenditure, and are used to study the gravitational interactions between celestial bodies.

L2 is often used for spacecraft missions to Jupiter because it is a stable location where the gravitational forces of the Sun, the Earth, and Jupiter cancel each other out.

L3 is the Lagrangian point that is located at the center of the equilateral triangle formed by the Earth, the Sun, and the spacecraft.

L2 is often used for spacecraft missions to Saturn because it is a stable location where the gravitational forces of the Sun, the Earth, and Saturn cancel each other out.

L4 is the Lagrangian point that is located in the same direction as the smaller body's motion.

L2 is often used for spacecraft missions to Uranus because it is a stable location where the gravitational forces of the Sun, the Earth, and Uranus cancel each other out.

L4 and L5 are located at the vertices of an equilateral triangle formed by the Sun, the smaller body, and the spacecraft.