Supernova whose light will 'reappear' in 60 years could solve the biggest problem in cosmology | Live Science

This is pretty cool.  Two supernovas (or is it super novae?) were detected by the James Webb telescope.  One remained visible, but the other disappeared. The reason for this has to do with the theory of cosmic lensing, essentially one is refracted by nearby objects and we can see it, while the other is hidden behind objects, and will remain invisible to us for a period of time.

The idea of this cosmic distortion was included in Einsteins theory of relativity, and has been observed at times.  But the fact that there are two objects helps us to solidify the theory because we can detect the differences and see some of the objects that distort theory light.

It's cool!

https://www.livescience.com/space/cosmology/astronomers-spot-2-warped-supernovas-whose-light-both-has-and-hasnt-reached-earth