The first task has been completed successfully, at Super Kamiokande, but the other two tasks have so far produced no measurable results.
There are three tasks assigned to these observatories: 1) to see if neutrinos can change from one type (or "flavor") to another, 2) to see whether the highly stable nuclear particle called the proton "decays", and 3) to act as an early warning system for supernova events happening in our Milky Way Galaxy.
There are two observatories dedicated to detecting neutrinos coming from outside the Earth, including, but especially, the Sun: The Sudbury Neutrino Observatory, in Canada, and the Super Kamiokande, in Japan. The Sudbury Observatory is currently closed.
Neutrinos are sub-atomic particles created in the fusion process. They have a small amount of mass, but are electrically neutral, and are very hard to detect.