Visualization of the Sun-Earth Lagrange points. Orbital mechanics is a fun subject, as it involves a lot of seemingly empty space that’s nevertheless full of very real forces, all of which must ...

The Lagrangian equilibrium stability points, or L points, are the five places where the combined gravitational forces of two bodies produce regions of gravitational balance. These are little ...

Four active spacecraft are already in orbit near the same spot—known as the Earth-sun system’s first Lagrange point, or L1—and others are parked nearby. It’s a privileged place where the ...

I was heartened to read of NASA’s plan to establish a space station at the L1 Earth-Moon Lagrangian point, (26 October, p 7). One of the benefits put forward for using that location was that it ...