  The main goal of the Borexino detector, in its final phase of construction in
the Gran Sasso underground laboratory, is the direct observation and
measurement of the low energy component of neutrinos coming from the Sun. The
unique low energy sensitivity and ultra-low background bring new capabilities
to attack problems in neutrino physiscs other than solar ones. Investigation
about the study of Supernoavae neutrinos and neutrino coming from the Earth
(Geoneutrinos) are here resumed.
