An A-Type Star is a type of star characterized by its blue-white color and high surface temperature, typically ranging from 7,500 to 10,000 Kelvin. These stars are known for their strong hydrogen absorption lines in their spectra, indicating a significant presence of hydrogen in their outer layers. A-Type Stars are often more massive than our Sun and can be found in various stages of their life cycle. They usually have a lifespan of about 1 to 2 billion years before evolving into red giants or other types of stars, depending on their mass.