  This article reviews the present status of high energy gamma-ray astronomy at
energies above 30 MeV. Observations in the past decade using both space- and
ground-based experiments have been primarily responsible for giving a
tremendous boost to our knowledge of the high energy Universe. High energy
gamma-rays have been detected from a wide range of Galactic and extragalactic
astrophysical sources, such as gamma-ray bursters, pulsars, and active
galaxies. These observations have established high energy gamma-ray astronomy
as a vital and exciting field, that has a bright future. This review summarizes
the experimental techniques, observations and results obtained with recent
experiments, and concludes with a short description of future prospects.
