Gamma-ray lighthouses.

This article from Australian Geographic discusses gamma-ray bursts (GRBs), which are short-lived astronomical events that release intense bursts of radiation. GRBs were first observed in 1967 and were later found to originate from deep in the universe. The article explores the idea that the intense beam of gamma radiation from a GRB is similar to the light from a distant lighthouse, with the beam sweeping over our view from Earth. This explanation helps to understand the symmetrical rise and fall of intensity observed in GRBs. [Extracted from the article]