Using Radio Astronomy to See the Smallest Details and make Movies of Exploding Stars

I will give a personal introduction to radio astronomy, with some bias
to own area of research which is supernovae and supernova remnants,
neutron stars and black holes.  I will describe how the technique of
Very Long Baseline Interferometry (VLBI) gives us resolutions of less
than 1 milli-arcsecond, higher than are available at any other
wavelength.  This resolution allows us to make images of such objects
as expanding young supernovae.  I will show a 16-min video which shows
both our movie of the expanding shell of supernova 1993J and some of
the details of the VLBI process.  I will also briefly mention some
other results of radio astronomy and VLBI such as pulsars and active
galactic nuclei, and briefly discuss future radio astronomy
instruments like MeerKAT.