The orbit of the James Webb Space Telescope (JWST) is a bit strange.

Unlike the legendary Hubble telescope that orbits the earth, JWST will orbit the sun. But as this animation from NASA’s Goddard Space Flight Center shows, the orbit of the tennis court-sized instrument (the yellow line) isn’t easy.

Engineers sent JWST into a unique region of space called the Lagrange Point, or L2, nearly 1 million miles away. There the powerful gravitational forces of the sun and earth are at work…

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