This artist’s concept shows what the exoplanet PSR J2322-2650b, which orbits a pulsar, may look like. Because of its extremely tight orbit, the planet’s entire year — the time it takes to go around the pulsar — is just 7.8 hours. Gravitational forces from the much heavier pulsar are pulling the Jupiter-mass world into this bizarre lemon shape. This planet, studied with NASA’s James Webb Space Telescope, appears to have an exotic helium-and-carbon-dominated atmosphere unlike any ever seen before. Its atmospheric composition challenges current theories of how the planet may have formed.
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