Description: Imagine that the four stars listed below all became Main Sequence (MS) stars at exactly the same time 10 billion years ago but in different locations of the universe. John Star is an O spectral class star with a MS lifetime of 3 million years. Its life will eventually end as a SN type Il and become a black hole. John Star is located in a galaxy 10 billion light years (ly) from Earth. Paul Star is a K spectral class star with a MS lifetime of 30 billion years. Its life will eventually end as a slowly cooling white dwarf. Paul Star is located in the MW at a distance of 10,000 ly from Earth. George Star is an F spectral class star that is part of a binary star system. It has a MS lifetime of 5 billion years. Its life will eventually end in a SN type I that completely destroys George Star. George Star is located in a galaxy 6 billion ly from Earth Ringo Star is a B spectral class star with a MS lifetime of 20 million years. Its life will eventually end as a SN type Il and become a neutron star. Ringo is located in the MW at a distance of 40,000 ly from Earth. Did all these stars reach their end state at the same time? True False