Hubble Gravitational Lensing Images Lay Groundwork for Roman Space Telescope Science
NASA's Hubble Space Telescope has captured a series of gravitational lensing images, including one released Oct. 22, 2026, to prepare for future observations with the new Nancy Grace Roman Space Telescope. Astronomers will analyze the lensing distortions to study dark matter in foreground galaxies and establish a foundation for Roman's upcoming science.
NASA
A new image released by NASA features a sweeping barred galaxy at its center, but the real object of interest sits at the bottom right: a gravitational lensing signature. The observation, dated Oct. 22, 2026, is one of many gravitational lensing images captured by NASA's Hubble Space Telescope in preparation for science operations with the new Nancy Grace Roman Space Telescope.
Gravitational lensing occurs when the gravity of massive foreground objects bends and distorts light from more distant sources behind them. By analyzing these distortions, astronomers can infer the distribution of dark matter in the foreground galaxies, matter that does not emit light but exerts gravitational influence.
The Hubble images serve a dual purpose. Beyond their immediate scientific value, they are intended to lay the groundwork for future observations by the Roman Space Telescope, which NASA describes as a new facility for this line of research.
NASA said images like this offer a glimpse of how Hubble and Roman will work together to build a more comprehensive picture of the cosmos. The pairing of the long-serving Hubble with the newer Roman telescope is expected to strengthen studies of dark matter and large-scale structure through lensing observations.
The image was produced by NASA and the European Space Agency, with contributions from X. Huang of the University of San Francisco. Processing was carried out by Gladys Kober of NASA and the Catholic University of America.