Astronomy 2021A/B Lecture 12: Chapter 12 Notes

• School: Western University
• Department: Astronomy
• Course: Astronomy 2021A/B
• Professor: Martin Zinke- Allmang

Document Summary

Chapter 12 the search for extraterrestrial intelligence. In 1961, the first scientific conference on the search for extraterrestrial intelligence was held in green bank, Modified drake equation is only looking at civilizations in our galaxy: number of civilizations = Modified drake equation calculates the amount of civilizations we could talk to, (cid:271)ut does(cid:374)"t gi(cid:448)e e(cid:454)act number! Milky way galaxy has hundreds of billions of stars, there could be over 100 billion habitable planets! Ca(cid:374)"t fi(cid:374)d a (cid:396)atio(cid:374)al (cid:449)a(cid:455) to esti(cid:373)ate flife (cid:271)e(cid:272)ause the o(cid:374)l(cid:455) pla(cid:374)et (cid:449)e k(cid:374)o(cid:449) that"s had life is ea(cid:396)th"s: since earth had life early, the ratio is probably closer to 1. We have to wait till we discover more life before we can edge towards a number though f(cid:272)i(cid:448) is tough to guess (cid:271)e(cid:272)ause (cid:449)e do(cid:374)"t k(cid:374)o(cid:449) if ou(cid:396) (cid:272)i(cid:448)ilizatio(cid:374) (cid:894)a(cid:374)d i(cid:374)tellige(cid:374)(cid:272)e(cid:895) is (cid:396)a(cid:396)e o(cid:396) (cid:374)atu(cid:396)al (cid:272)o(cid:374)se(cid:395)ue(cid:374)(cid:272)e of evolution.