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Nancy Grace Roman Space Telescope Launches on Falcon Heavy Rocket
Confirmed
In Short: NASA's $4.3 billion Roman Space Telescope has launched, marking a significant milestone in space exploration.
NASA's $4.3 billion Nancy Grace Roman Space Telescope launched atop a SpaceX Falcon Heavy rocket on Sunday, embarking on a three-month journey to a point a million miles from Earth. The telescope, equipped with a wide-field 300-megapixel camera and a Hubble-class mirror originally built for a spy satellite, will map the large-scale structure of the cosmos and search for clues about dark energy and dark matter.
The launch comes after a series of diplomatic tensions between the United States and France, where President Emmanuel Macron planned a high-profile space summit. The White House reportedly pressured US space companies to skip the summit, citing concerns that it might include policy prescriptions that could disadvantage US firms.
The telescope's wide-field camera will also search for exoplanets, with the expectation that the number of discovered planets will exceed 100,000 by the end of its mission. Additionally, Roman is expected to catalog over 20 billion stars, 2 billion galaxies, tens of thousands of supernova blasts, and countless transient events like flares generated by stars near black holes.
President Trump, whose administration had previously attempted to reduce funding for the Roman Space Telescope, called NASA chief Jared Isaacman during a post-launch news conference at the Florida spaceport. Isaacman held his phone up to a microphone so the president could address the room, highlighting the political significance of the launch.
The launch of the Roman Space Telescope marks a significant step in understanding the universe, with its wide array of scientific goals and the potential to revolutionize our knowledge of dark energy, dark matter, and the distribution of celestial bodies.
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- Macron announced his plans for the meeting during a June 2025 speech on the importance of space to defense and Europe’s need to remain competitive in the domain.
- Later, Macron announced that some of France’s most visible space officials, including astronaut Thomas Pesquet and entrepreneur Hélène Huby, would serve as special envoys.
- The White House officials were growing concerned that this was not a normal space industry trade show or conference but would instead include some policy prescriptions around contentious issues such as sharing of spectrum.
- After news broke of this call with US space companies, France’s cabinet-level space minister, Philippe Baptiste, still urged the Americans to attend.
- “Let me be clear: America is not only welcome—we want you there.” The normally genteel world of international space policy turned ugly this week as several prominent US space companies—including SpaceX, Blue Origin, Stoke Space, K2, and Starcloud—pulled out of a high-profile French space summit organized by the country’s president, Emmanuel Macron.
- Multiple sources confirmed to Ars that an official with the White House Office of Science and Technology Policy, or OSTP, led the call with US space companies late last week.
- The call was convened in response to queries from US industry about the French meeting, which is not part of the traditional circuit of international space conferences.
- US officials believed that at the end of the summit, European space officials may move to adopt some policies that were not necessarily beneficial to US companies.