The Lagrange Points of the Space Telescope

The points are called le grange points because they were first calculated by a guy called la grange about two or 300 deays before to day. So if you take the sun, the earth and l 4, that forms an equilateral triangle. And similarly for l five, also, we have an equilalateral triang triangle. The l four and l five la grange points are reasonably stable. They're actually stable. You put something there, it'll stay there. But if you put something in one or l 2 or ll three, those points are kind of metar stable. So you need to spend a little bit of energy, a a little bitof fuel,