🔭 Do you know what a Lagrange point is? In today’s “Once upon a launch” we’ll talk about the Herschel and Planck missions, and explain how to match the Earth’s orbital period around the Sun. #ArianeGroup #Herschel&Planck ©ESA-CNES-AE / CSG Service Optique | ArianeGroup

NASA's James Webb Space Telescope is on its way to Lagrange Point 2. But what and where is that? Lagrange Points are positions in space where the gravitational pull of two large masses (like the Sun and Earth) precisely equals the centripetal force required for a small object (like a spacecraft) to move with them. These can be used by spacecraft as "parking spots" in space to remain in a fixed position with minimal fuel consumption. Lagrange Point 2, or L2, is located about 1 million miles (1.5