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the history of stars is written in the

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light of the countless galaxies in which

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they reside

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staring long enough and even a small

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patch of sky like hubble's ultra deep

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field will reveal thousands of distant

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galaxies

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but the image of a galaxy tells only

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part of the story

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by spreading the galaxy's light out into

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a spectrum astronomers can learn about

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the ages of its stars its star formation

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history and more

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the best way to get the whole story

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would be to reveal the spectra of every

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galaxy in an image all at once

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fortunately nasa's dancy grace roman

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space telescope has hardware designed to

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do just that

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even better its remarkably large field

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of view can cover the area of a hundred

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ultra deep fields in a single

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observation

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such a bounty of galaxy spectra will

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help astronomers discover hidden

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chapters in the universe's history of