“Going Beyond” –NASA Names Hubble Successor After Its First Chief Astronomer Nancy Grace Roman


WFIRST Telescope


“I wondered had I really oversold the Hubble. I have to admit that, since, I have been convinced that I didn’t,” said Nancy Grace Roman, NASA’s first Chief Astronomer. Today, NASA announced that it is naming its next-generation ‘dark-energy’ space telescope, Hubble’s successor, the Wide Field Infrared Survey Telescope (WFIRST), in her honor.

Like Hubble and the other NASA Great Observatories, the Roman Space Telescope will image stars and gas in our own galaxy, measuring its structure, surveying the birthplaces of stars, and finding telltale signs of smaller galaxies torn apart by interactions with the Milky Way. It will investigate new dwarf planets, comets, and asteroids in our solar system. It will also image large clusters of galaxies, characterize the dark matter around them, and discover thousands of galaxies currently beyond the cosmological horizon at very high redshifts, which will provide the tools to study how galaxies evolve over cosmic time.

The Roman Space Telescope will deliver new insights into the history and structure of the universe, including the mysterious “dark energy” about which Noble Laureate, Adam Reiss says: “I have absolutely no clue what dark energy is. Dark energy appears strong enough to push the entire universe – yet its source is unknown, its location is unknown and its physics are highly speculative.”

The powerful new observatory will also build on the broad foundation of work begun with Hubble and other observatories on planets outside our solar system. It will discover thousands of exoplanets using its wide-field camera and study the atmospheres of giant gaseous planets orbiting other stars with a sophisticated technology demonstration coronagraph.


"Going Beyond" --NASA Names Hubble Successor After Its First Chief Astronomer Nancy Grace Roman


Ms Roman paved the way for space telescopes focused on the broader universe. The newly named Nancy Grace Roman Space Telescope (or Roman Space Telescope, for short), is set to launch in the mid-2020s.

Dr. Roman is credited with making the Hubble Space Telescope a reality, leading to her nickname “mother of Hubble.” In the mid-1960s, she set up a committee of astronomers and engineers to envision a telescope that could accomplish important scientific goals. She convinced NASA and Congress that it was a priority to launch the most powerful space telescope the world had ever seen. She argued that, for the price of a movie ticket, each American could be given years of scientific discoveries.

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Her vision was realized when Hubble launched in 1990. Hubble turned out to be the most scientifically revolutionary space telescope of all time.

The Roman Space Telescope

The Space Telescope Science Institute (STScI) in Baltimore, Maryland, is the science operations center for Hubble, and will house the science and mission operations centers for the upcoming James Webb Space Telescope. In 2019, NASA announced that STScI would serve as the science operations center for the Roman Space Telescope. In that role, the Institute will plan, schedule, and carry out observations, process and archive mission datasets, and engage and inform the astronomical community and the public.

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All of the data collected by the Roman Space Telescope will be held in the Barbara A. Mikulski Archive for Space Telescopes (MAST) at STScI and made immediately available for any investigation. Astronomers around the world will be able to mine data from these archives to conduct a broad range of studies, greatly increasing the impact of the mission. The observatory will collect an estimated 20 petabytes of data over its planned 5-year mission – the equivalent of a 40,000-year-long song in mp3 format.

The Science & Big Data

“The Roman Space Telescope will bring big data to space astrophysics. The large and freely accessible data sets will inspire new ways of exploring the cosmos, advancing our understanding and presenting new mysteries,” said STScI Deputy Director Nancy Levenson.

The Roman Space Telescope will have the same sensitivity and resolution as the Hubble Space Telescope, but will have a viewing area 100 times bigger than Hubble. Each single image from Roman will encompass an area of the sky that is larger than the size of the full Moon as seen from Earth.

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It will survey the sky in infrared light, which is invisible to human eyes. Infrared light provides a powerful tool for exploring the cosmos because it penetrates dust clouds that block visible and higher-energy light from view.

The Roman Space Telescope will work in concert with the James Webb Space Telescope to yield greater insights than either telescope could achieve on its own. Its wide field of view will reveal diverse populations of astronomical objects and net a bounty of intriguing targets for Webb to follow up on with unprecedented sensitivity.

Ultimately the telescope that bears Dr. Nancy Grace Roman’s name will allow researchers to do what she once said:

“If you enjoy puzzles, science or engineering may be the field for you, because scientific research and engineering is a continuous series of solving puzzles.”

The Daily Galaxy, Sam Cabot, via Space Science Telescope Institute

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