Using Drake\' s equation: N = R*f_pn_ef_1f_if_cL Estimate the number of civiliza

Question

Using Drake' s equation: N = R*f_pn_ef_1f_if_cL Estimate the number of civilizations within the galaxy that arc technologically advanced enough to communicate with us using the values for R* and f_p given in the text, and n_e = 0.3 f_1 = 0.8 f_i = 0.8 f_c=0.6 L = 924 N = R*f_pn_ef_1f_if_cL in which R* = rate at which Sunlike stars form in the Galaxy f_p = fraction of Sunlike stars that have planets n_c = number of planets per solar-type star system suitable for life f_1 = fraction of those habitable planets on which life actually arises f_i = fraction of those life-forms that evolve into intelligent species f_c = fraction of those species that develop adequate technology and then choose to send messages out into space L = lifetime of that technologically advanced civilization

Explanation / Answer

Darke's equation N = R * fp * ne * fl * fi * fc * L

R = 7/ year

fp = 0.6

ne = 0.3

fl = 0.8

fi = 0.8

fc = 0.6

L = 924

N = 7*0.6*0.3*0.8*0.8*0.6*924

N = 447 Civilizations approximately

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.