The paper presents a comprehensive analysis of gamma-ray burst (GRB) afterglows, revealing that their conical opening angles are tightly clustered around 5 × 10⁵⁰ erg. This finding suggests that the energy released in GRBs is comparable to that of ordinary supernovae, and that the wide variation in fluence and luminosity is due to differences in jet opening angles. The true GRB rate is at least 500 times higher than the observed rate, as only a small fraction of GRBs are visible to any given observer. The study also shows that the true gamma-ray energy released in GRBs is smaller than the isotropic equivalent energy due to relativistic beaming. The afterglow emission is primarily synchrotron radiation, and the observed afterglow light curves provide a way to measure the jet opening angles. The analysis of these angles reveals that the true energy release in GRBs is tightly clustered around 5 × 10⁵⁰ erg, with a narrow distribution. This suggests that the central engines of GRBs release a similar amount of energy, and that the observed energy distribution is due to variations in jet opening angles. The study also discusses the implications of these findings for the progenitors of GRBs and the physics of the central engine. The results suggest that the energy budget of GRBs is similar to that of supernovae, and that the high Lorentz factor of the ejecta is due to the jet structure. The paper concludes that the findings provide important insights into the nature of GRBs and their connection to supernovae.The paper presents a comprehensive analysis of gamma-ray burst (GRB) afterglows, revealing that their conical opening angles are tightly clustered around 5 × 10⁵⁰ erg. This finding suggests that the energy released in GRBs is comparable to that of ordinary supernovae, and that the wide variation in fluence and luminosity is due to differences in jet opening angles. The true GRB rate is at least 500 times higher than the observed rate, as only a small fraction of GRBs are visible to any given observer. The study also shows that the true gamma-ray energy released in GRBs is smaller than the isotropic equivalent energy due to relativistic beaming. The afterglow emission is primarily synchrotron radiation, and the observed afterglow light curves provide a way to measure the jet opening angles. The analysis of these angles reveals that the true energy release in GRBs is tightly clustered around 5 × 10⁵⁰ erg, with a narrow distribution. This suggests that the central engines of GRBs release a similar amount of energy, and that the observed energy distribution is due to variations in jet opening angles. The study also discusses the implications of these findings for the progenitors of GRBs and the physics of the central engine. The results suggest that the energy budget of GRBs is similar to that of supernovae, and that the high Lorentz factor of the ejecta is due to the jet structure. The paper concludes that the findings provide important insights into the nature of GRBs and their connection to supernovae.