Wolf-Rayet stars are a rare type of massive star known for their strong stellar winds and high temperatures. They are typically more than 20 times the mass of our Sun and are in a late stage of evolution, having shed much of their outer hydrogen layers. This process reveals their hot helium-rich cores, which can reach temperatures of over 100,000 degrees Celsius. These stars are often associated with the formation of supernovae and can lead to the creation of neutron stars or black holes when they end their life cycles. Their intense brightness and unique spectra make them important for studying stellar evolution and the chemical enrichment of the universe.