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“Both TOI-1408 b and TOI-1408 c are incredibly close to their parent star compared to the planets in our solar system,” research lead author Judith Korth of Lund University told Space.com. “Imagine our solar system, but instead, Jupiter is orbiting very close to the sun nearly every four days, one-twentieth of the period of Mercury.
This is already very close to the star, and still, we detected another planet even closer to the star that interacts strongly with its big neighbor, causing their orbits to wobble in ways we’ve never seen before.