We just can’t resolve them with our telescopes.” In this case, though, multiple layers ... it acts as a micro-lens, in addition to the macro-lensing effect of the galaxy cluster as a whole.” ...

and in this case, convenience. This telescope is super compact, measuring under seven inches long. It can slip into a bag or even a cup holder. It has a lens cap to keep it safe and a compass on ...

The team believes this to be the first case of a double gravitational ... It is the northernmost gravitational lens known, which means there are a lot of ground-based telescopes that can conduct ...

Using the James Webb Space Telescope, astronomers have discovered ... such as in galaxy cluster lenses. In those cases, the effects of the different deflectors are combined in a weak way.