Abstract
The neutrinos are among us. Most are made by nuclear bombs or plants as being discovered on 1956, or by stars, as our own Sun , and-or by rare Supernovae explosions as they had been discovered since last half a century. Neutrinos electron and mainly muons are also abundant spread, noisy secondaries of our atmosphere screening of cosmic rays. Such atmospheric muon tracks at Tevs are twenty times dominat in Icecube , the largest km cube neutrino detector , deep at South Pole. Above a few tens Tev energy we expected a new Neutrino Astronomy by AGN or GRB events. Since nearly a decade this goal seem to be reached by a sudden change of neutrino flavors at 30-60 TeV edges, ruled no more by tracks but by others ones ( cascades). On 2017 a first possible AGN connection offered a first hope for such Astronomy. However many puzzles hung over such a Neutrino Astronomy records interpretation and understunding . The solution of all of them is forcing us to a new rare, filtered and secret Neutrino Astronomy