From strange worlds to rare planets: Nasa’s Roman Telescope begins its cosmic hunt

NASA's latest flagship space observatory, the Nancy Grace Roman Space Telescope, embarked on its mission to explore the cosmos on Sunday. The $4.3 billion telescope launched atop a SpaceX Falcon Heavy rocket from NASA's Kennedy Space Center, en route to Lagrange Point 2, a location approximately 1 million miles away from Earth. The Roman Space Telescope, named after the late Nancy Grace Roman, the first chief astronomer at NASA, has a field of view more than 100 times wider than that of the Hubble Space Telescope.

With its broad view of the universe, Roman is expected to discover thousands of exoplanets, billions of stars, and tens of billions of galaxies. The telescope's main objective is to map the universe in unprecedented detail, uncovering dark matter and dark energy, which are believed to constitute most of the universe's contents. Roman's observations will ultimately help scientists better understand the gravitational effects of dark matter and the role of dark energy in the accelerating expansion of the universe.

One of the telescope's most intriguing features is an experimental coronagraph, designed to block starlight and enable direct imaging of faint planets orbiting their host stars. This capability, combined with Roman's vast observational scope, positions it as a powerful tool for probing the universe, complementing other major projects like the Hubble Space Telescope, the James Webb Space Telescope, the European Space Agency's Euclid spacecraft, and the National Science Foundation's Vera C. Rubin Observatory.