When you look up the night sky on a clear night, it may seem as if most stars are cool, blue stars that would fall under the B, or A class of stars. However, main-sequence Red dwarf … See more

A protostar is what you have before a star forms. A protostar is a collection of gas that has collapsed down from a giant molecular cloud. The protostar phase of stellar evolution la… See more

A T Tauri staris a stage in a star’s formation and evolution right before it becomes a main-sequence star. This phase occurs at the end of the protostar phase when the gravitationa… See more

Main Sequence starsare young stars. They are powered by the fusion of hydrogen (H) into helium (He) in their cores, a process that requires temperatures of more than 10 million Kelv… See more

Blue starsare typically hot, O-type stars that are commonly found in active star-forming regions, particularly in the arms of spiral galaxies, where their light illuminates surroundin… See more