The James Webb Telescope: Viewing the Universe from Lagrange Point L2

There are five sweet spots where a spacecraft can keep pace with Earth as both orbit the Sun. They are called the Lagrange points, after Joseph-Louis Lagrange, the brilliant Italian and naturalized French mathematician who found special solutions to what is called the “three-body problem”. To locate the second Lagrange point, L2, draw a line … Continue reading The James Webb Telescope: Viewing the…