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[Music]

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when it opens its eyes to our universe

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in the mid-2020s

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the nancy grace roman space telescope

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will capture images unlike any satellite

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before it

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the roman space telescope will have the

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same image resolution as hubble but will

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cover an area 100 times larger

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roman will also view the sky in

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carefully selected wavelengths of

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infrared light

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which will allow it to see through

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obscuring dust to reveal hidden stars

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and watch the growth of galaxies over

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the last 10 billion years

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to see what the sky will look like to

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roman

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scientists use special processing

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techniques to create simulated images

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in this case they began with a hubble

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mosaic of andromeda one of the closest

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galaxies to our own

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released in 2015

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this mosaic was created out of over 400

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individual hubble images and took more

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than three years

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because of its enormous coverage

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roman will be able to create a similar

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mosaic with just two images

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each taking only 90 minutes

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roman space telescope images are

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actually made of 18 separate panels each

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one corresponding to a single 16

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megapixel detector the arrangement of

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these detectors creates the distinctive

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the simulated image is not just special

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because of its size however

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it also shows andromeda as it will

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appear through roman's optics and

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infrared filters

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to achieve this

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scientists started with hubble filters

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that are closest to romans

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then they used software to measure the

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positions and brightnesses of the

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roughly 100 million stars in those

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images and applied those as input to

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roman image simulation software

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which added each star back to the image

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after applying the expected effects of

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the roman optics filters and detectors

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the resulting image reveals many stars

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that were blocked by dust in visible

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light

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telescope's role in providing a more

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comprehensive view of the stars in the

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local universe

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roman will also use its broad view to

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search for planets around other stars in

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our galaxy and to look for the

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fingerprint of dark matter and dark

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energy in the distant reaches of the

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universe

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with an unprecedented combination of

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breadth and depth the nancy grace roman