I will present some highlight observations from ISAS/NASA/ESA Hinode
satellite with implication to our understanding on the cosmic magnetic
fields. Topics include discoveries of magneto-hydrodynamic waves,
intense polar magnetic fields, turbulent dynamo as represented by
horizontal magnetic fields, and convective collapse of magnetic flux
tubes, all made by Hinode. For each topic, I will comment on a relevant
issue related to cosmic magnetic fields.

Turbulent dynamo process does create magnetic fields with field
strength close to equi-partition. How do we have strong stellar activity
in ultra-slow-rotating stars and in very late-type fully convective
stars? Turbulent dynamo taking place in convective layers of stars may
answer these questions with respect to classical dynamo process in
rotating turbulent stars. Furthermore, turbulent dynamo process may play
a role to provide seed fields after the re-ionization era (a concept
initially suggested by Russell Kulsrud and people).

Nature appears to prefer isolated flux tubes with magnetic field
strength far exceeding the local equi-partition field strength where any
dynamo process does not reach and work. What creates such intense
magnetic fields beyond equi-partition in an apparently hierarchical
dynamo structure in our universe? This may be answered by a process
called convective collapse predicted by Eugene Parker 40 years ago. I
will also show that MHD waves along flux tubes are very efficient means
to transport energy, subject to reflection and refraction through
non-uniform stellar medium. I will talk about particle acceleration in
the perpendicular shock associated with the Petschek reconnection
structure as indicated in solar observations (, if time permits).