Let's turn the sun into a telescope. In fact, we don't have to do any work—we just have to be in the right spot.

In the vast universe, galaxies rotate in ways that don’t make sense if only visible matter is considered. For almost a ...

With the amazing power of modern telescopes, our "best of" astronomy websites have abundant evidence of gravity bending light, acting like a lens. If the alignment of a background object with a ...

Gravitational lensing occurs when the gravity of a massive object — like a galaxy or a black hole — bends the light from a more distant object. This effect is a direct consequence of Einstein ...

How to wrap your head around the most mind-bending theories of reality Manthos Karydas at the Lawrence Berkeley National Laboratory (LBNL) in California says that gravity stands out from the other ...

This setup means you can have gravity without mass—something long believed to be impossible. These shells wouldn’t just hold galaxies together. As Lieu shows, they could even bend light.

The strange sight is actually two galaxies, with the light of the second warped around the one at the front as a result of its massive gravity.