Can gravitational lensing address big mysteries about the universe?
Well, one of the deep mysteries about our universe is that about 96 percent of it, we don’t really know what it is. We have various theories about it. In the popular press, we hear about “dark matter.” If it truly exists, it will have a gravitational field. And if it has a gravitational field, then gravitational lensing is going to pick up the signature of this dark matter.
