June 2022: Weak gravitational lensing reveals dark-matter maps of the cosmic web

UNIONS scientists have produced a reference catalogue of 100 million gravitationally lensed distant galaxies, one of the largest datasets ever created. First announced by CEA’s IRFU (EN/FR) and DRF (FR), the news can be found on the CNRS (FR) and CFHT (EN) sites as well.

April 2022: UNIONS public web site

We are launching this public web site ( to showcase UNIONS to the astronomy community, in particular in preparation for future public releases.