Energetic particles are high-energy charged particles, such as electrons, protons, and ions, that are often found in the space environment, specifically within the Earth's magnetosphere and near the Sun. These particles can be accelerated through various processes, such as solar flares, coronal mass ejections, and cosmic rays, and can pose a danger to satellites, astronauts, and electronic systems on Earth. Researchers study energetic particles to better understand their behavior, effects on the space environment, and develop ways to mitigate their impact.