New Observations of Solar Wind 1/f Turbulence Spectrum from Parker Solar Probe - Huang,Z; Sioulas,N; Shi,C; Velli,M; Bowen,T; Davis,N; Chandran,BDG; Matteini,L; Kang,N; Shi,X; Huang,J; Bale,SD; et al. (ASTROPHYSICAL JOURNAL LETTERS, 2023)