1. Science of the Physical Universe 30: Life as a Planetary Phenomenon

2. Formerly … Science Core A-54: Life as a Planetary Phenomenon Instructor: Dimitar Sasselov

3. Instructor: Dimitar Sasselov Teaching Fellows: Wade Henning (Head TF), Darin Ragozzine, Li Zeng, Jessica Haurin, Sarah Rugheimer, Maggie McLean & others Science of the Physical Universe 30: Life as a Planetary Phenomenon

4. Lecture 1: Life as a Planetary Phenomenon (Introduction) 1.Course structure 2.Grading 3.Organizational matters 4.Introduction to the course

5. Course Structure: 5 themes 1.The Origin and Evolution of Planets 2.The Origin and Evolution of Life 3.Exploring the Solar System for Life 4.Searching for Life beyond the Solar System 5.Extraterrestrial Intelligence

6. January 25, 2008 Researchers Take Step Toward Synthetic Life By ANDREW POLLACK Taking a significant step toward the creation of synthetic forms of life, researchers reported Thursday that they had manufactured the entire genome of a bacterium by stitching together its chemical components.

7. Published online at www.edge.orgwww.edge.org Jan. 2008

8. May 2010 J.C.Venter Institute: JCVI-syn1.0

10. Water flows on Mars since 2001 ?!

11. Lakes and channels on Titan!

12. New Lines of Inquiry Twenty years ago: Life is distinct from physical planet Earth Now: Life is an integral part of the Earth Major discoveries –Diversity of microbial life on Earth –Role of life in determining atmosphere composition and history –Role of life in regulating climate –Planetary missions, especially Mars –Extrasolar Planets

13. Geobiology: the study of how organisms and environments influence each other through time. Astrobiology = Geobiology + Exploration Our inquiry follows the paths of exploration: –direct (our solar system) –remote sensing (nearby solar systems ) –SETI (the rest of the universe) Life is a planetary phenomenon

14. Mars from Earth, ca. 1900

15. Mars from Martian Orbit: Mariner 4 1965

16. Closer Orbit: Viking 1977

17. Hi-Rise camera looks at Mars, October 2006

18. The Martian Surface: MER 2004

19. Comparison to Earth

20. MER 2004: The highest resolution

22. Kepler: the camera - CCDs in the focal plane Camera: 42 CCDs

24. The discovery of Kepler’s first rocky planet (announced Jan. 9, 2011)

25. What Kepler-10b might look like - an artist’s view

26. A map of an extrasolar planet Knutson, Charbonneau et al. (2007)