Explanation:

Lagrange Points are positioned in space where the gravitational forces of a two-body system like the Sun and the Earth produce enhanced regions of attraction and repulsion. These can be used by spacecraft to reduce fuel consumption needed to remain in position.

Of the five Lagrange points, three are unstable and two are stable. The unstable Lagrange points - labeled L1, L2, and L3 - lie along the line connecting the two large masses. The stable Lagrange points - labeled L4 and L5 - form the apex of two equilateral triangles that have large masses at their vertices. L4 leads the orbit of earth and L5 follows.