Pronunciation: [kˈe͡ɪ stˈɑː] (IPA) 
The term "K star" is often used in astronomy to refer to a type of star that is orange in color and has a surface temperature of around 3,500 to 5,000 Kelvin. The word "K" is pronounced as /keɪ/ in IPA transcription, with the "a" sound being similar to the word "bay." The word "star" is pronounced as /stɑr/, with the "a" sound being similar to the word "car." Therefore, the correct pronunciation of "K star" would be /keɪ stɑr/.
K star is a term used in astronomy to refer to a specific kind of astronomical object known as a K-type star. A K-type star is a main sequence star that belongs to the spectral class K, which is one of the classes used to classify stars based on their surface temperature. K-type stars have temperatures generally ranging from 3,900 to 5,200 Kelvin.
These stars are relatively cooler and less luminous than stars of other spectral classes. They typically appear orange or orange-red in color. K stars are known to have a longer stellar lifespan compared to hotter stars, such as those in the O or B spectral classes.
K-type stars are considered to be intermediate in size between red dwarf stars and larger yellow dwarf stars like our Sun, which belongs to the G spectral class. They are relatively common in the universe and are found in various types of star systems, including binary systems and star clusters.
K stars are of great interest to astronomers as they provide valuable insights into stellar evolution, including the formation of planetary systems. They are known to host exoplanets and are often targets of exoplanet detection missions. The study of K stars also aids in understanding the habitability of planetary systems, as their characteristics can influence the potential for life to exist on nearby planets.
