The US National Aeronautics and Space Administration (NASA) launched the Nancy Grace Roman Space Telescope on Sunday from Florida’s Kennedy Space Center aboard a SpaceX Falcon Heavy rocket. The mission aims to produce a broad three-dimensional map of the universe, study dark matter and dark energy, and search for thousands of planets beyond the solar system.
The observatory cost about 4 billion dollars. Its mission will begin with five years of observations and could extend to 10 years if fuel supplies allow. NASA said Roman was launched nine months ahead of schedule.
A journey to Lagrange Point 2
The telescope is heading to an orbital location known as Lagrange Point 2, about 1.6 million kilometers from Earth. During the 90 days after launch, the mission team will activate the spacecraft, test its systems and prepare it to begin scientific operations.
Project Manager Jackie Townsend expected the first high-resolution images to arrive before the winter holiday. Julie McEnery, Roman’s chief scientist, said during a post-launch news conference that this stage marked the end of the engineers’ work and the beginning of the scientists’ work.
This stage marks the end of the engineers’ work and the beginning of the scientists’ work.
Faster surveys and broader coverage
McEnery said the observatory has sensitivity and imaging resolution approaching those of the Hubble Space Telescope, but can survey areas of the sky much faster. In her estimation, Roman can survey the Milky Way in one month of observations, while Hubble would need about a century to conduct a similar survey.
Roman is designed to capture wide panoramic images, complementing the deep views provided by the James Webb Space Telescope, which was launched in 2021. The project aims to produce what NASA describes as the most comprehensive three-dimensional map of the universe to date.
The main survey will take more than a year and cover more than 2 billion galaxies, helping scientists measure the effects of dark matter and dark energy and study their roles in the universe’s structure and accelerating expansion. The observatory will also test gravity on vast cosmic scales.
Searching for planets and unexpected discoveries
Roman will conduct a broad search for planets outside the solar system. The mission is expected to discover thousands of new planets and provide a comprehensive census of planetary systems resembling the solar system.
Cosmologist Mustafa Ishak of the University of Texas at Dallas, a member of the project’s science collaboration team, said Roman’s ability to make unexpected discoveries was one of the mission’s most significant aspects. He noted that major astronomical observatories have historically made advances in fields scientists did not anticipate before their launch.
Project funding
Attempts to cut funding for the telescope or cancel the project were proposed during President Donald Trump’s two terms, but Congress kept it in place. During the news conference, Trump called NASA Administrator Jared Isaacman and praised the launch.
The agency’s 2026 budget is about 24 billion dollars, according to the source material.
