Why do we feel type O and B stars are poor candidates for extraterrestrial life?
A)They do not have a habitable Zone.
B)They don't produce enough yellow light.
C)Their lifetime is too short.
D)They don't produce a planetary system.
E)Their habitable zone lies too close to the star.

Question

Quizplus · Accepted Answer

Type O and B stars are massive, hot and short-lived. Their lifetime ranges from only a few million years to a few tens of millions of years. This is not enough time for complex life to evolve, which makes them poor candidates for sustaining extraterrestrial life. Type O and B stars have very short lifetimes (ranging from a few million to a few tens of millions of years), which is not sufficient for the evolution of complex life forms. As life is believed to require billions of years to evolve, these stars are considered poor candidates for extraterrestrial life.

Why Do We Feel Type O and B Stars Are