Extreme_Life - Extreme Life on Earth Stephen Eikenberry 9...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Extreme Life on Earth Stephen Eikenberry 9 September 2010 AST 2037 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
Life on Earth So far, we have focused on “normal” life on Earth The sort of standard critters, plants, and bacteria we are used to We will use this as a standard “baseline” for evaluating conditions for life to develop elsewhere But … 2
Background image of page 2
The Goldilocks Syndrome Earth is “just right” for this sort of life Conversely, standard life is “just right” for Earth Does that mean that life can ONLY be that way? Or is it just that, because we live on Earth, we mostly see “Earth-standard” life? 3
Background image of page 3

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

View Full DocumentRight Arrow Icon
Extreme” Life on Earth There are forms of life on Earth which seem “extreme” compared to standard life (No, not talking about the guys on “Jackass”) These forms of life show how far life deviates from “normal” and still survives and reproduces This gives us some idea of the limitations of life in the Universe (at least Earth-like life) 4
Background image of page 4
Extreme Life: Aquifex Aeolicus In the 1960’s, biologists were interested in studying “how extreme” life could be They knew that microbes lived in water downstream from hot springs in Yellowstone National Park The springs themselves reached temperatures of ~85 ° C (185 ° F) – near the boiling point of water The question: How far upstream (close to the hottest water) could microbes survive? 5
Background image of page 5

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

View Full DocumentRight Arrow Icon
High Temps: So What? What’s the Big Deal about life at high temperatures? Experience says that putting
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 23

Extreme_Life - Extreme Life on Earth Stephen Eikenberry 9...

This preview shows document pages 1 - 7. Sign up to view the full document.

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