Аннотация:The observed properties of Supernovae (SNe) and Cosmic Gamma-ray Bursts (GRBs) are briefly summarized. Measurement of SNe distances in cosmology gives important results. It is explained how the acceleration of expansion of Universe was established using SNe. I point out which features of gaseous Supernova Remnants and GRBs (and their afterglows) are common and what is different in those events.