Lecture 3 - Astro/Geo 160 Spring 2011 Class#3 – 26 January 2011 Lecture 2 Highlights Three ways that terrestrial knowledge informs the

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Astro/Geo 160 Spring 2011 Class #3 – 26 January 2011 Lecture 2 Highlights Three ways that terrestrial knowledge informs the possibility for extraterrestrial life (Figure 1.3 in text): Evidence that organic molecules form easily and naturally Evidence that life appeared early in the history of Earth Evidence that life on Earth can survive under a wide range of conditions Ample evidence is available that life on Earth can survive under a wide range of conditions McKay and colleagues ( Science , 2003) took advantage of the chiral nature of biological molecules on Earth to explore whether or not life was active in the Atacama desert; results proved that presence of some water is an absolute requirement for active biological metabolism Other research in the Atacama has revealed that living organisms (e.g. bacteria, fungi) can survive in a condition of “suspended animation” (e.g. as spores) in the absence of sufficient water for active metabolism Lecture 2 Highlights Almost all true extremophiles are Prokaryotes from either the Bacterial or Archaeal domains of life Each class of extremophile represents a unique evolutionary adaptation to survive a particular type of stress....
View Full Document

This note was uploaded on 02/14/2011 for the course ORGANIC CH 341 taught by Professor Idk during the Spring '11 term at Wisconsin.

Page1 / 23

Lecture 3 - Astro/Geo 160 Spring 2011 Class#3 – 26 January 2011 Lecture 2 Highlights Three ways that terrestrial knowledge informs the

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online