NASA's Nancy Grace Roman Space Telescope launched on Sunday aboard a SpaceX Falcon Heavy rocket, embarking on a multi-year mission to map the cosmos and unravel mysteries surrounding dark matter and dark energy. The $4.3 billion project, named after pioneering U.S. astronomer Nancy Grace Roman, aims to create an unprecedented map of the universe and understand the forces believed to constitute approximately 95% of its composition, which remain largely unknown.
The Roman Telescope boasts a field of view more than 100 times larger than Hubble's and significantly wider than James Webb's, allowing it to survey vast swathes of the sky from its vantage point 1.5 million kilometers (930,000 miles) from Earth. It is designed to work in conjunction with other observatories like Webb, offering broad surveys where Webb provides greater power and precision. The telescope will generate an immense amount of data, about 1.3 terabytes per day, and is expected to downlink 2,500 terabytes over its five-year primary mission, compared to Hubble's 172 terabytes over 30 years.
Key objectives include discovering thousands of exoplanets and tens of thousands of supernovae. Roman's advanced coronagraph is designed to block out starlight, potentially detecting Jupiter-sized exoplanets orbiting Earth-like stars and analyzing their atmospheric composition. While existing instruments like Kepler have found about 6,200 exoplanets, Roman is anticipated to discover over 100,000 exoplanets within 18 months, providing a comprehensive census of planetary systems. Its infrared vision will allow it to detect light from billions of years ago, offering insights into the universe's distant past and the evolution of dark matter and dark energy. Scientists and the public will have access to this massive dataset, which is expected to challenge current understandings of the universe's structure.
