SpaceX set to launch NASA’s $4.3 billion Roman space telescope

On Sunday, SpaceX successfully launched NASA's $4.3 billion Nancy Grace Roman Space Telescope, beginning a mission to explore dark energy, dark matter, and exoplanets. The telescope was transported aboard SpaceX's Falcon Heavy rocket, taking off from Cape Canaveral, Florida, at 7:26 a.m. local time. The spacecraft is set to reach an orbit approximately one million miles from Earth, with observations commencing as early as December.

The mission's principal investigator, Kristen McQuinn, stated that the telescope may provide insights into potential gaps in our understanding of physics. The Roman Space Telescope is anticipated to operate for five to ten years, observing how dark matter and dark energy impact distant stars and galaxies. This could lead to a better understanding of the universe's expansion. The telescope also aims to discover exoplanets, including potentially Earth-like worlds.

Carrying a mirror similar in size to the Hubble Space Telescope, the Roman Space Telescope features a wide-field camera that can observe an area about 100 times larger than Hubble's. NASA estimates that the telescope will map the sky roughly 1,000 times faster than its predecessor. The spacecraft primarily collects infrared light and also includes a coronagraph aimed at blocking starlight, potentially enabling scientists to directly image faint planets orbiting nearby stars.

Following the launch, the Roman Space Telescope will spend several months traveling to its destination and deploying its instruments. Mission teams will conduct approximately three months of testing before the beginning of science operations near the end of the year. The first images are expected in 2027. The mission has faced years of development challenges and rising costs since its conception in the early 2010s.

Despite a 2018 attempt by the first Trump administration to cancel the project, and a 2025 budget proposal with no funding, Congress ultimately blocked the cancellation and included the necessary funding in the final budget request.