ERSC 1P94 Assignment 3 N=Rsxf>

ERSC IP94 Assignment 3 N xf x Nexftxfi x fc XL where... N is the number of civilizations in our galaxy with which communication is possible fp is the fraction of those stars with planets fl is the fraction of those planets (from Ne) that succeed in developing life Fc is the fraction of those planets (from fi) with intelligent life that develop interstellar communication R* is the average rate of star formation per year in our galaxy Ne is the average number of those planets that may develop an ecosystem Fi is the fraction of those planets (from Fl) with life that develop intelligent life L is the average length of time such civilizations survive and continue to send communications Below is Table 1 with several sets of values for each of the variables in the Drake Equation. Using each set of estimated variables, calculate N, the number of civilizations within our galaxy with which, communication could conceivably be possible. Note that all of the f variables are fractions and thus represent percentages. For example, 0.5 means 50%. Question 5 and (Table 1) - (2 marks each) Variable = average rate of suitable star formation (star/year) f = fraction of suitable stars with planets Ne = average number of planets that may develop ecosystems, per star that has planets f I = fraction of planets with ecosystems that develop life fi = fraction of planets with life that develop intelligent life = fraction of planet with intelligent life that develop interstellar communication L= average length of time a civilization survives and can communicate N = number of civilizations within our galaxy with which communication is possible Drake's Values (1961) 10 0.5 2 1 0.01 0.01 10,000 ( estion ) Astronomical Society of the Pacific (2011) 1 0.4 0.52 (this is a range, use a value of 1.2) 1 1 0.7 10, 000 ( uestion ) Here's afun thought: There are two 'populated' planets in our solar system. One (Earth) is populated by humans (or bipedal primates if you prefer) who learned to make robots, and the other (Mars) by robots made by the humans on the first planet.