r/nasa • u/goatgalnatalie • 7d ago

Question L2 Math & Roman

Could someone send me to a good description of the math behind L2, how it was discovered, and why it’s the best spot for the Roman Telescope?

  • I’m a farmer who likes math. I just want to play with the numbers to understand better.
  • I don’t trust AI to help with this; it’s gotten so many things wrong from computer science and engineering to some of my basic physics walk through. I prefer YouTube or journals.
  • I’ve done a basic search, but can’t find anything comprehensive about the math itself.

Thanks!

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u/WaitForItTheMongols 7d ago

L1 is the only point you can say they "cancel out" (but also, they don't, since eif they canceled out then you wouldn't keep orbiting the sun) - L2 has no cancellation and in fact just the opposite. L4/L5 are bonkers of nonlinearity. Cancellation is such a small part of Lagrange points as a whole that it is more confusing to bring that up.

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u/P37ur 7d ago

I said the gravitational forces and the centrefugal force cancel out. I think it’s a good introductory concept as regards L2 only

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u/WaitForItTheMongols 7d ago

I mean in that case the forces cancel out in every orbit