The Hubble's Deep and Ultra Deep Field images changed our understanding of the Universe. The Nancy Grace Roman telescope promises to do the same.
Those images showed everyone that what appears to be a tiny, empty part of the sky contains thousands of galaxies, some dating back to the Universe’s early days. Each of those galaxies can have hundreds of billions of stars. These early galaxies formed only a few hundred million years after the Big Bang. The images inspired awe in the human minds that took the time to understand them. And they’re part of history now. will capture its own version of those historical images but in wide-angle.
The Roman’s strength lies in observing large sky areas at once. And when it eventually gets to work later this decade, its Ultra-Deep Field images will be extraordinary. This new simulated image will not only whet our appetites as astronomy “fans,” it’s part of a new study. It’s a mistake to focus on just the size of the images and how many galaxies they contain. It’s not a contest. It’s the information about the Universe that’s the intriguing part.
There are huge blank spots in our knowledge of galactic evolution, and the NGRST’s wide-field power will show galaxies in their environments. Researchers will probe the galaxies and their surroundings to see how they affect galactic evolution and star formation.
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