Euclid blasted off on its six-year mission to explore the dark universe on 1 July 2023. Before the spacecraft could begin its survey, the team of scientists and engineers on Earth had to make sure everything was working properly.

The European Space Agency's Euclid space telescope was going through preliminary tests in September 2023 when it captured images of an Einstein Ring in a nearby galaxy.

A European Space Agency telescope has discovered its first "extremely rare" Einstein ring in a galaxy "not too far away" nearly 600 million light years from Earth.

The "dark universe detective" space telescope Euclid has discovered its first Einstein ring in the process, learning about dark matter at the heart of a distant galaxy.

Albert Einstein himself thought that the eponymous Einstein ring would be impossible to observe, but the Euclid telescope has picked one up just 600 million light years from Earth

Einstein rings help scientists study dark matter and cosmic expansion. Euclid will find thousands more lenses to map the Universe’s structure