The European Space Agency (ESA) released a fresh image of the Milky Way's center captured by its Euclid telescope. The observation focuses on the galactic bulge, a dense region of stars and dust, offering a preview of what NASA's upcoming Nancy Grace Roman Space Telescope will explore.
Euclid, primarily designed to map dark energy across the cosmos, used its visible-light instrument for this survey. The new data provides high-resolution views of stellar populations and interstellar material in the galaxy's core, which is typically obscured by dust in visible wavelengths.
The image release comes as Euclid continues its six-year mission, launched in July 2023. This particular observation supports calibration and targeting strategies for Roman, set to launch no earlier than 2026, by identifying scientifically rich targets in the crowded galactic center.
Beyond immediate collaboration, the survey aids understanding of star formation and galactic evolution. By comparing Euclid's wide-field views with Roman's sharper, deeper infrared capabilities, scientists aim to unravel the Milky Way's structure and history.
A caveat remains: Euclid's visible-light instruments cannot penetrate the densest dust clouds near the galactic center. Roman's infrared sensitivity will be required to fully map the region, meaning Euclid's data is a complementary step rather than a complete picture.