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tess the transiting exoplanet survey

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satellite has completed its survey of

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the southern sky

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into 13 sectors and its four cameras

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monitored each sector for nearly a month

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tess was watching for the slight dips in

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starlight as distant planets passed in

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front of their host stars but it also

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caught other transient events like

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comets and supernovae in addition to

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building a beautiful panoramic picture

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of the sky

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the bright band on the left is the milky

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way our home galaxy viewed edge on

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zooming into the mosaic it's clear how

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much detail and how many stars tess has

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captured

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at the center is the continuous viewing

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zone where the view of one test camera

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overlaps all 13 sectors

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[Music]

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within it is the large magellanic cloud

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one of the closest galaxies to our own

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a little farther out is the more distant

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small magellanic cloud flanked by a ball

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of stars the bright globular cluster ngc

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silhouetted by the band of the milky way

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is the colsack nebula an obscuring cloud

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of dust in the constellation crux also

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known as the southern cross

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the mosaic also contains many notable

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stars such as alpha centauri one of our

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closest neighboring systems and among

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the brightest stars in the sky

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[Music]

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fomalhaut which hosts one of the first

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directly imaged planets

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[Music]

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sirius the brightest star in the night

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sky

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and beetlejuice a red supergiant star

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that marks one shoulder of the

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the orion nebula a vast nursery where

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stars are born was imaged in great

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this isn't a cosmic object at all

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it's actually a reflection of rigel the

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bright star marking one of orion's feet

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and it's caused by light scattering off

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tessa's confirmed exoplanet discoveries

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are currently distributed all around the

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southern sky

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[Music]

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many of these discoveries are actually

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multi-planet systems and several are

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earth-sized

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many more candidate exoplanets await

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confirmation

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it's easy to see which sectors were

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among the first because astronomers have

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had more time to study them and find

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potential transits eventually candidate

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and confirmed planets will be

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distributed more evenly around the sky

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[Music]

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tess has now turned around and is

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observing the northern sky using the

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same strategy

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as it does astronomers will continue to

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sift through roughly 20 terabytes of

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data from the southern hemisphere as

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well as the new incoming information

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eventually hundreds or even thousands of