1. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
1972

2. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
Mercury

3. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
Venus

4. Astronomy 121 circa 2006 - Not Your Grandma's Solar System
Venus

5. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

6. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

7. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

8. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

9. Astronomy 121 circa 2006 - Not Your Grandma's Solar System

11. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

12. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

13. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

14. Astronomy 121 circa 2006 - Not Your Grandma's Solar System

15. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

16. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

17. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

18. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

19. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

20. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

21. Astronomy 121 circa 2007 - Not Your Grandma's Solar System

22. 1972

23. ca. 1990

24. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
A new perspective on the precarious nature of life on Earth
Blind good luck in several instances has enabled life to survive and evolve on Earth for 4 billion years.
Life may be prevalent in the Universe, but only in RARE instances does it have the chance to evolve to complexity.

25. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
A new perspective on prospects for life elsewhere
Life is more tolerant of extreme environments than previously thought.
DNA analysis suggests life likely originated in volcanic vents.
Life's prerequisites (especially liquid water) are more prevalent in solar systems.
Planets share material. Impacts can transport life naturally from one world to another increasing the odds of survival.

26. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
A new perspective on prospects for life elsewhere
Life is more tolerant of extreme environments than previously thought.
DNA analysis suggests life likely originated in volcanic vents.
Life's prerequisites (especially liquid water) are more prevalent in solar systems.
Planets share material. Impacts can transport life naturally from one world to another increasing the odds of survival.

27. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
A new perspective on prospects for life elsewhere
Life is more tolerant of extreme environments than previously thought.
DNA analysis suggests life likely originated in volcanic vents.
Life's prerequisites (especially liquid water) are more prevalent in solar systems.
Planets share material. Impacts can transport life naturally from one world to another increasing the odds of survival.

28. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
A new perspective on prospects for life elsewhere
Life is more tolerant of extreme environments than previously thought.
DNA analysis suggests life likely originated in volcanic vents.
Life's prerequisites (especially liquid water) are more prevalent in solar systems.
Planets share material. Impacts can transport life naturally from one world to another increasing the odds of survival.

29. Astronomy 121 circa 2007 - Not Your Grandma's Solar System
Hundreds of planets have been found around other stars.
It took until 1995 to find the first one.