What’s next for NASA’s new Roman Space Telescope?
After a flawless launch, the Nancy Grace Roman Space Telescope is on a mission to solve some of the universe’s biggest mysteries
NASA’s Nancy Grace Roman Space Telescope is already exceeding expectations.
After reaching the launchpad ahead of schedule and on budget, the spy-satellite-sourced, $4-billion project pulled off a flawless launch to space on Sunday morning. At a postlaunch press conference, NASA officials noted that the performance of the rocket that took the telescope to space was so picture-perfect that Roman will likely need fewer trajectory adjustments than planned. That means Roman’s onboard fuel could instead help extend the observatory’s five-year mission to a full decade.
Lofted onboard a SpaceX Falcon Heavy rocket from NASA’s Kennedy Space Center in Florida, Roman was “exactly where it needed to be,” said Denton Gibson, launch director of NASA’s Launch Services Program, at the press event. “That’s a monumental effort because we know the more accurate the launch vehicle is, the more science we can get.”
If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.
“A launch is such a transition point,” said Julie McEnery, Roman’s senior project scientist at NASA’s Goddard Space Flight Center (GSFC). “It’s a transition because it’s an end point for the engineers, but it’s a starting point for the scientists.”
Roman “will contribute to world-changing science,” said NASA administrator Jared Isaacman. In addition to the agency’s Hubble Space Telescope and James Webb Space Telescope (JWST), “Roman will become a household name alongside those great instruments of discovery.”
Separating from its rocket about 30 minutes after launch, Roman successfully deployed its power-providing solar panels and spacecraft-cooling sunshield and will soon unfurl its high-gain antenna for broadband communications with Earth.
In the coming days, the observatory will perform a midcourse correction burn on its approximately three-month voyage to the second sun-Earth Lagrange point, or L2. There, situated 750,000 miles beyond the moon, Roman will begin its science mission to study dark energy, dark matter and exoplanets.
Along the way, the telescope will power up its two core science payloads: a wide-field infrared camera for panoramic views of the cosmos that will be 100 times wider than Hubble’s and an advanced coronagraph for capturing unprecedented images of exoplanets.
Nicky Fox, associate administrator for NASA’s Science Mission Directorate, summarized the sheer scale of Roman’s expected discoveries at the press conference: “Billions of galaxies will be found, tens of billions of new stars, tens of thousands of new planets, and thousands of supernovae—all wrapped up in one beautiful telescope.”
The observatory should beam back its first images before the winter holidays, said Jackie Townsend, Roman’s project manager at GSFC. And the telescope’s first year of science observations, slated to begin in January 2027, will be action-packed.
One of the mission’s top priorities will be putting the coronagraph through its paces—presumably by taking snapshots of known exoplanetary systems. “Let’s get that technology demonstration nailed so that we can think about what we might want to do next with that instrument,” McEnery said. Observations with Roman’s coronagraph could unveil Jupiter-like planets around nearby stars and will guide the development of NASA’s Habitable Worlds Observatory, which will target smaller, more Earth-like worlds.
Another early focus for the mission will involve using Roman’s wide-field camera to stare at the Milky Way’s star-packed central bulge. Those observations will constitute “a deeper, sharper view of the center of our galaxy” than ever before, McEnery said, and will ultimately deliver most of Roman’s exoplanet discoveries while initially helping mission controllers gauge the telescope’s on-sky performance.
Source: Read the original article on www.scientificamerican.com
