Indeed it is nothing but amazing. I think it's the first time we put a artificiel satellit in the L2 orbit.
From the page I linked to
"L2 is approximately 1 million miles from Earth (932056 miles/1.5M km to be exact). But Webb never actually arrives at L2, it is travelling to enter an orbit around L2. Webb's L2 orbit is very large in size and it enters its orbit before it reaches the linear distance between Earth and L2. Webb's orbit around L2 is known as a halo orbit which, rather than a single path, is an orbit that periodically varies through a series of paths around L2."
Markus
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My little lovely female cat
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