NASA to Launch Roman Space Telescope Sunday, Targeting Dark Matter, Dark Energy, and Exoplanets

NASA is set to launch its newest flagship space telescope on Sunday, beginning a multi‑year mission to produce an unprecedented map of the cosmos and illuminate major physics mysteries.

The Roman Space Telescope, engineered for a panoramic view of space, will help unlock the universe’s secrets, according to President Donald Trump, who made the remarks Friday at NASA’s headquarters in Houston.

Standing over 12 meters (39 feet) tall, the state‑of‑the‑art observatory is scheduled to lift off from Florida at 7:26 am (1126 GMT) aboard a SpaceX Falcon Heavy rocket.

Developed over more than a decade at a cost exceeding $4 billion, the telescope is named after pioneering U.S. astronomer Nancy Grace Roman, known as the “Mother of Hubble,” another of NASA’s flagship observatories.

While Hubble revealed that the universe’s expansion is accelerating, the Roman mission will tackle other unresolved puzzles such as dark matter and dark energy.

“Roman will give the Earth a new atlas of the universe,” NASA administrator Jared Isaacman said in April when unveiling the project.

Studying the Invisible

Roman’s field of view exceeds Hubble’s by over 100 times and surpasses James Webb’s, enabling it to map huge sky areas from a position 1.5 million km from Earth – a distance it will reach in roughly 100 days.

The telescope is built to complement observatories like Webb, leveraging their power and precision to discover thousands of exoplanets and tens of thousands of supernovae.

It will create the largest catalog of astronomical objects ever compiled, helping us gauge how common solar systems like ours are, said Dave Content, Roman’s technical manager, in an AFP interview.

The mission will also illuminate two of physics’s greatest enigmas: dark matter and dark energy. Though their origins are unknown, they are thought to constitute roughly 95 % of the universe.

Dark matter is hypothesized to act as gravitational glue, while dark energy is seen as a repulsive force accelerating cosmic expansion.

Its infrared capabilities will allow Roman to detect light from objects billions of years old, effectively peering back in time and giving scientists a view of the universe’s early history while deepening our understanding of dark matter and dark energy.

Surprise

Roman’s data will complement the Rubin Observatory in Chile and ESA’s Euclid probe, and its findings are eagerly awaited as they may reshape scientists’ comprehension of cosmic structure.

Julie McEnery, Roman’s senior project scientist, noted that recent research indicates current models of early cosmic expansion may be inaccurate.

“Recent observations suggest our standard cosmological model is flawed,” she said at a Saturday press conference, noting Roman will provide clarity.

“Roman will definitively tell us whether the model holds or not. If it doesn’t, the high‑precision data will let us discriminate between competing theories,” she explained.

All Roman data will be publicly accessible, though the massive volume poses a challenge, warned Content.

At roughly 1.3 TB per day, “you can’t simply download the data to a laptop,” Content observed.

McEnery added, “More data is always better.”

She expects the mission’s most groundbreaking discoveries to be unexpected surprises that will pave the way for future explorations.

(FRANCCE 24 with AFP)

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