Quasars acting as gravitational lenses?

     NASA's Hubble Space Telescope, one of the most popular telescopes in the world. The Hubble discovered some galaxies that's containing quasars. Now, lets talk a little bit about quasars. Quasar is also known as quasi-stellar radio source. It is a very energetic and distant active nucleus. According to the Universe Today, Jerry Coffey says "Quasars are the brightest and most distance objects in the universe as we know it. The term quasar has fallen out of common use by astronomers and they are now know as quasi-stellar because we now know that they are not true stars".

     Super massive black holes are the fuel that powered quasars. They are considered to one of the brightest objects in the universe and often outshining the total starlight of their host galaxies. A team of astronomers were put together to find these cases that are considered to be rare. These cases revolving around galaxy-quasar combinations acting as lenses.





Check out this article for further details.
http://www.nasa.gov/mission_pages/hubble/science/quasar-lens.html