Astronomy 2021A/B Lecture 1: Chapter 1 Notes

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

Document Summary

We are searching for extraterrestrial life any life beyond earth (simple or complex) The scientific context of the search: astronomy, planetary science (geology and atmospheric science), biology. Geocentric: old school, everything revolves around the earth approach. Tells us that earth is one tiny floating planet and that there are many of them: physical laws that happened here apply elsewhere as well, earth is not the center of anything smh. Since physics and chem is universal, we hope bio is too. It is possible to find organisms, anywhere in the universe. Search for extraterrestrial intelligence (seti) > broadcasts to aliens to see if they message back. The study of life in the universe.