Cosmic Rays in the Milky Way and Beyond
  Cosmic rays (CRs) are the probes of the deep space. They allow us to study
particle acceleration, chemical composition of the interstellar medium, and
global properties of our Galaxy. However, until recently studies of CRs were
similar to astronomical observations with blurred lenses that capture only the
integral brightness of all stars in the field of view. Thanks to the recent
technological developments, our "lenses" are now capable of capturing sharp
images and making precise measurements of all CR species. We have a full range
of unique instrumentation for direct measurements of CRs in space and for
multi-wavelength observations of their emissions and more missions are coming.
The unveiling picture is astonishing. This paper gives a short overview of very
exciting developments in astrophysics of CRs in the Milky Way and in other
star-forming galaxies.
