In a depth of 4 kilometers off Pylos, near Sapienza, in the deepest waters of the Mediterranean Sea, a twelve storey astrophysics laboratory will be installed. Its purpose will be to detect a special particle by the name of Neutrino. In 1931 astrophysicist Paulli predicted its existence, that is that the particle is a by product of a nuclear reaction. 25 years later Paulli's prediction is verified in the lab.
The neutrino is doomed to run at the speed of light, something that does not really exist, in zero or almost zero mass and no electrical charge.
There is no obstacle that will hold it back or absorb it. Millions of neutrinos are going through u's to the other end of the earth on their inconceivable journey in space. They are the moving history records of the Universe from the beginning of its creation to this day.
They can provide, if detected, all the information of all stellar happenings as far as the outer edge of the Universe. This detection , however, requires a new kind of telescope like the one now being tested in Pylos. There are similar telescopes under the ice on the North Pole and in the depths of Lake Vaikal.
Great depth is essential in absorbing cosmic radiation and thus allowing the neutrinos only to reach that peculiar telescope. The ambitious aim of programme Nestor is to capture high energy neutrinos that come from the mysterious Quasars and the black holes, which may exist in the center of galaxies.
The telescope
This particular telescope is a twelve storey tower , higher than the Eiffel Tower. The floor of each storey is hexagon shaped in every corner of which are sensitive light multipliers. If a neutrino reacts with water atoms it is detected and the information  is transferred to the center of the hexagon where there is a titanium sphere. Inside it are complex electronic systems that receive the signals and channel them through optic fibers to the programme monitoring center , where computer
systems do the processing and the extraction of results.

Wise  Nestor king of Pylos provides the meeting point of myth and science giving his name to the acronym of Nestor programme which means NEutrinos from Supernova To Oceanic Regions