Scientists Need Your Help to Find Galaxies Bending Light in Space

The European Space Agency’s Euclid telescope has released a new dataset of unprecedented scale, and scientists are seeking public help to search for gravitational lenses hidden within the observations.

Gravitational lensing occurs when massive objects like galaxies warp spacetime, bending light from distant sources into arcs, rings, or multiple images. This phenomenon, predicted by Einstein’s general theory of relativity, acts as a natural telescope that magnifies faint and distant galaxies, enabling astronomers to study the universe’s structure, dark matter, and dark energy.

The Space Warps citizen science project, hosted on the Zooniverse platform, invites members of the public to join professional astronomers in hunting for these rare and elusive strong gravitational lenses in Euclid’s first full year of observations. By analyzing images, volunteers can help identify candidates that might otherwise be missed in the vast dataset.

In March 2025, researchers discovered 500 galaxy-galaxy strong lenses in just the first 0.04% of Euclid data, most of which were previously unknown. This early success demonstrates the potential of combining citizen science, artificial intelligence, and expert analysis to uncover gravitational lenses that reveal insights into dark matter distribution and the nature of dark energy.

Euclid’s sensitive imaging over large swaths of the sky provides the detail needed to identify these rare cosmic phenomena. As gravitational lenses distort light from background objects, they create observable signatures such as Einstein rings and stretched arcs, which serve as probes for understanding the mass composition of foreground galaxies and the geometry of the universe.

The project builds on the success of previous gravitational lens searches and aims to expand the catalog of known lenses to improve models of cosmic structure. Public participation allows scientists to process the enormous volume of data more efficiently while engaging citizens in authentic scientific discovery.