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.
Gravitational lensing occurs when the gravity of a massive object, like a galaxy, warps the fabric of spacetime, bending the light from a more distant background object.
Our business already includes one John whose namesake signed the Declaration of Independence. (Good day to you, Mr. Penn.) But now we have another, this time on four legs, bidding to confirm that ...