  A short overview is given of the status of research on young extragalactic
radio sources. We concentrate on Very Long Baseline Interferometric (VLBI), and
space-VLBI results obtained with the VLBI Space Observatory Programme (VSOP).
In 2012, VSOP-2 will be launched, which will allow VLBI observations at an
unprecedented angular resolution. One particular question VSOP-2 could answer
is whether some of the High Frequency Peakers (HFP) are indeed the youngest
objects in the family of GPS and CSS sources. VSOP-2 observations can reveal
their angular morphology and determine whether any are Ultra-compact Symmetric
Objects.
