1. Difficult to control and manipulate: Cosmic rays are naturally occurring, and their properties like energy and direction of travel are not easily controlled. This makes it challenging to utilize them for specific applications, unlike man-made radiation sources that can be manipulated.
2. Potential health risks: High-energy cosmic rays can interact with matter, including living tissue, and potentially cause damage. While the intensity of cosmic rays is generally low, prolonged exposure, especially at high altitudes or in space, can increase the risk of radiation sickness and cancer.
