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[Music]

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this is celt9b

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it's about twice the size of jupiter and

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is always super hot taking only 36 hours

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to orbit its star

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it receives 44 000 times more energy

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than the sun delivers to earth making it

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one of the hottest planets known with a

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dayside temperature hotter than the

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surfaces of some stars

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this causes its atmosphere to boil away

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into space

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now

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thanks to observations from nasa's test

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satellite we know celt 9b is even

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weirder

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test spots dips in starlight whenever a

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planet passes in front of its star from

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our perspective astronomers call these

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dips transits but celt 9b's odd star

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complicates things it spins so fast it's

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squished into an oval

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this makes its poles hotter than its

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middle a property scientists call

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gravity darkening

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the planet's orbit also odd carries it

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over the star's poles

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combined these effects make the start of

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each transit different from its end

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making further study difficult

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a team led by nasa goddard scientists

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used test observations to disentangle

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these effects and provide further

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insight into the system

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the polar orbit and gravity darkening

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give celt 9b an unusual type of season

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summer occurs when it passes over the

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star's hot poles winter such as it is

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happens when it passes the cooler

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equator and for every 36 hour orbit

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which is kelt 9b's year

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the planet experiences these seasons

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twice and each is less than nine hours

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long

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scientists expect the frequently

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changing temperatures produce wild winds

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and they're busy modeling kelp 9b's

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atmosphere

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thanks to tess astronomers are equipped

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to learn more about this curious system