BY MIRABEL ODETA
NASA’s Nancy Grace Roman Space Telescope launched from Cape Canaveral early Sunday, beginning a mission designed to give scientists an unprecedented view of the universe and investigate some of the biggest questions in modern astronomy.
The telescope lifted off at 7:26 a.m., marking another major milestone in NASA’s efforts to study distant galaxies, exploding stars and the large-scale structure of the cosmos.
The mission carries the name of Nancy Grace Roman, a pioneering NASA astronomer whose work helped shape the agency’s approach to space-based astronomy. Roman became NASA’s first chief astronomer and was the agency’s first female executive.
She played a major role in developing the scientific and organizational groundwork that eventually led to the Hubble Space Telescope. Her contributions to astronomy earned her the nickname “Mother of Hubble,” and her legacy now continues through the telescope that bears her name.
The Roman Space Telescope is designed to complement earlier observatories while dramatically expanding the amount of the universe scientists can study at once.
Dr. Dominic Benford, a program scientist working on the Roman mission, said the telescope’s major advantage will be its enormous field of view while maintaining highly detailed imagery.
“We’ve designed a survey machine with 100 times the field of view of the Hubble Space Telescope, but the same sharpness of imagery, and we can map the universe 10 times more efficiently,” Benford said.
According to Benford, that combination will allow scientists to image the cosmos at a pace far beyond what previous space telescopes have been capable of achieving.
The telescope’s wide view is expected to be particularly important for studying large numbers of galaxies and astronomical events at the same time. Instead of focusing on relatively small portions of the sky, Roman will be able to survey enormous areas and collect vast amounts of data for researchers to analyze.
Scientists also expect the mission to discover astronomical events that have never been observed in such numbers.
One of the major targets will be supernovae, the powerful explosions associated with the deaths of certain stars. By observing thousands of these events across different periods in cosmic history, researchers hope to learn more about how the universe has evolved.
“We’ll see thousands of new supernovae across cosmic time and see all of those happening because Roman’s panoramic vision means that we’re not just looking at one galaxy at a time, we’re looking at millions of galaxies all the time,” Benford said.
The ability to observe millions of galaxies simultaneously could give scientists a much broader picture of how galaxies formed and changed over billions of years.
Roman is also expected to contribute to research into dark energy and dark matter, two of the major unresolved areas of cosmology. Although dark matter and dark energy cannot be directly observed in the same way as ordinary matter, scientists have inferred their existence from their effects on the universe.
By surveying huge portions of the sky, Roman will provide researchers with measurements that can help them investigate how the universe has expanded and how its structure has developed over time.
The telescope will also be capable of searching for planets beyond the solar system and studying stars and galaxies much farther away than can be examined with conventional ground-based observations.
Following the launch, the spacecraft will undergo a period of deployment, testing and instrument preparation before beginning its primary scientific observations.
Initial data is expected to begin coming back roughly a week after launch, while the first images are anticipated about 90 days later, after the telescope has completed the necessary commissioning process.
Those first images will provide an early look at the capabilities of the observatory and give scientists an opportunity to verify that its instruments are operating as intended.
The Roman mission represents another major step in the continuing effort to explore the universe through increasingly powerful space observatories. Its combination of a wide field of view, detailed imaging and rapid surveying is expected to allow astronomers to examine the cosmos on a scale that has not previously been possible.
As the mission progresses, scientists will use Roman’s observations to build large surveys of the universe and search for clues about its origins, evolution and future.
The telescope’s launch also adds another chapter to Nancy Grace Roman’s legacy, decades after her work helped make space-based astronomy a central part of NASA’s scientific program.
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