IceCube's discovery of a diffuse flux of
astrophysical neutrinos, in other words, the universe's glow in
neutrinos from beyond the solar system, started a new era of neutrino
astronomy. I will discuss in detail the multiple diffuse flux
analyses in IceCube that observe the astrophysical flux, and what each
can tell us. Spatial analyses that aim to identify the sources of such
astrophysical neutrinos will be discussed.