Galactic phenomena refer to the incredible events and structures found in galaxies, which are vast collections of stars, gas, and dust. One fascinating example is a supernova, the explosive death of a massive star, which can outshine entire galaxies for a short time. These explosions spread elements throughout space, contributing to the formation of new stars and planets. Another captivating phenomenon is the black hole, a region in space where gravity is so strong that nothing, not even light, can escape. Black holes often form from the remnants of massive stars after they explode. They can influence the motion of nearby stars and even pull in surrounding matter, creating a swirling disk of gas and dust known as an accretion disk.