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in 2004 nasa's hubble space telescope

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changed astronomy forever when

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astronomers revealed the first

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ultra-deep field image

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created with more than 270 hours of

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observation over the course of a year it

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is our farthest ever visible light image

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of the universe

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this tiny window revealed thousands of

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galaxies in a seemingly empty patch of

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sky

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we can't see any farther in visible

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light because the unrelenting expansion

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of space has stretched galaxy's

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ultraviolet glow into red light

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more distant galaxies are mostly

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detectable in infrared

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that's why in 2009 hubble captured an

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infrared ultra deep field image that

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probed even deeper into the same spot

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it remains one of the most distant

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images ever made and a key source of

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information about some of the universe's

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early history

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[Music]

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the nancy grace roman space telescope

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will have infrared resolution and

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capabilities similar to hubble but each

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image will cover 200 times the area of

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sky

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a potential roman ultra deep field could

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be far faster to capture yet cover

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hundreds of times as much of the early

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universe

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to further explore this potential a team

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of researchers has created a simulated

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ultra-deep field image

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the entire image contains about one

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square degree of sky or about five full

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moons

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[Music]

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even a single roman field of view

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contains a staggering number of distant

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galaxies each one filled with billions

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this computer-generated image represents

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the distribution of galaxies that

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researchers expect to find based on the

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existing hubble observations

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it will help astronomers determine how

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best to conduct an actual roman ultra

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deep field and anticipate the

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measurements and conclusions they might

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be able to make

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because light travels at a finite speed

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distant images are also snapshots

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earlier in time

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ultra deep field images reveal a time

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from about 200 million to 1 billion

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years after the big bang

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roman's image would be the largest

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observation of its kind for this time

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period

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and could reveal key features in the

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adolescent universe

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including rare infant galaxies that

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eventually evolve into mature galaxies

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like our own milky way

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[Music]

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with roman set to launch by 2027

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this simulated ultra deep field image is

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just one example of the fantastic