  We speculate that a new generation of particle astrophysics instrumentation
will reveal the enigmatic sources of cosmic rays prior to the one hundredth
anniversary of their discovery by Hess in 1912. While only a "smoking gun'' is
missing for the case that the galactic component of the cosmic ray spectrum
originates in supernova remnants, deciphering the origin of the extragalactic
component is still at a level of reading tea leaves.
