Habitable zone. Habitable zone is the orbital region the bound around the star that has the characteristic most likely like Earth. Habitable zone must contain water in a form of liquid to support life. The extra-terrestrial life need the same requirement as the as Earth that is water in form of liquid. The star will live longer to give time for its planet to develop life. The planet will be in the best position from the star for the planet to make the water to remains consistent in liquid form. F, G, K, or M star are the most start the being searched for life-bearing planet. O, B, and mostly A star’s plant does not able to develop a complex life style due to the stars short lifetime. In the image below, the blue region is the location of the …show more content…
It also can be referred as the "Goldilocks Zone". Image below show the habitable zone with the region. Figure 2 show the region of the habitable zone
The size of the habitable zone is directly proportional to the star’s luminosity. As the star’s luminosity increase, the region of habitable zone increase. The luminosity of the stars also determine the equilibrium temperature of the stars.
Drake Equation The Drake equation is an equation used to estimate the number of communicating civilization in our galaxies that is the Milky Way. This is equation been proposed in 1961 by an astronomer named Franck Drake.
The Drake Equation:
N = R* • fp • ne • fl • fi • fc • L
Where,
N = the number of the civilization in the Milky Way Galaxy where the electromagnetic emission can be detect
R* = the rate of formation of stars where the intelligent life are suitable to develop
fp= the friction of stars over planetary system
ne = the number of planet over solar system that has an environment that is suitable for life
fl = fraction that that life is actually