NASA's Powerful New Roman Telescope Blasts Off to Map the Cosmos

A New Eye on the Universe

A massive observatory that scientists have called a "discovery machine" has launched toward the cosmos, beginning a journey that could mark a significant shift in our understanding of the universe. The mission launched on August 30 at 7:26 a.m. EDT aboard a SpaceX Falcon Heavy rocket from Launch Complex 39A at NASA's Kennedy Space Center in Florida. The observatory reached orbit about 10 minutes later.

The Nancy Grace Roman Space Telescope, which is about the size of a tour bus, lifted off on SpaceX's Falcon Heavy rocket and is now on a million-mile journey that will take it to its new home in space. It'll travel to a spot called Lagrange Point 2, where it'll have an excellent view of deep space. The Roman telescope is expected to spend five years in space, with the possibility of an additional five-year extension.

What Makes Roman So Special

It carries a 300-megapixel camera that sees in infrared light with the same sensitivity and sharpness as Hubble — but with a field of view at least 100 times larger, and it can observe the sky about 1,000 times faster than the 36-year-old telescope can. That combination is unprecedented. Where Hubble peers deeply at tiny patches of sky and the James Webb Space Telescope zooms in on exquisite detail, Roman sweeps vast cosmic territory without sacrificing precision.

Roman will send back 1.4 terabytes of data every day — the highest data rate of any NASA astrophysics mission so far — and machine learning, artificial intelligence, and citizen scientists will help sift through it and flag significant findings, which astronomers can then study. NASA anticipates releasing Roman's first images by early 2027.

The Big Questions It Will Answer

This flagship mission's vast, deep surveys will help astronomers explore dark matter, dark energy, and exoplanets, and almost anything from our own solar system to galaxies at the edge of the observable universe. Scientists have long predicted that the universe's expansion would gradually slow down in the aftermath of the Big Bang — but instead, galaxies are moving at an increasing pace while still being held together, a power which scientists call dark energy. Roman is designed to help explain why.

Roman is expected to uncover around 100,000 new exoplanets — a staggering leap compared to the nearly 6,200 currently known. Roman will also be used to directly observe exoplanets using a newly developed Coronagraph Instrument designed to almost completely block light from distant stars, to the order of one-part-per-billion, to image their planets. Over its lifetime, the telescope could potentially measure light from a billion galaxies.

Named for a Pioneer

The telescope is named for Nancy Grace Roman, NASA's first chief of astronomy and first female executive. Roman, who was nicknamed the "Mother of Hubble," championed the idea of a space-based telescope for decades before it became a reality. Naming this next-generation observatory after her is a fitting tribute — she laid the groundwork for the very tradition of great space observatories that her namesake now continues.

As Julie McEnery, Roman's senior project scientist at NASA Goddard, put it: "We've never been able to view the universe with eyes like Roman's before." NASA has been planning and developing the Roman Space Telescope for 16 years. Now that it's finally in space, the scientific community is bracing for a flood of discoveries that could reshape our understanding of everything from nearby worlds to the very structure of the cosmos itself.