Borexino is a low background liquid-scintillator detector acquiring solar neutrino data at the LNGS underground laboratory in Italy. Borexino is the only experiment capable to perform spectrally resolved measurements of the low-energy 7Be solar neutrinos. Using three years of data since the start of data taking in 2007, Borexino has performed the first direct measurement of the 7Be solar neutrino rate with accuracy better than 5%. The absence of day-night asymmetry of the 7Be solar neutrino rate was measured with a total uncertainty of 1%. Borexino results alone reject the LOW region of solar neutrino oscillation parameters at more than 8.5σ CL. Combined with the other solar neutrino data, Borexino measurements isolate the MSW-LMA solution of neutrino oscillations without assuming CPT invariance in the neutrino sector.
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