Alien Realities

Speculations on alien biology, communication, linguistics, psychology, society, technology, and theology, and the possible effects of contact or discovery of alien life.

Friday, January 20, 2012

Alien Life: Potential habitability of 55 Cancri AB star system and why life began to produce oxygen

Alien Life: Potential habitability of 55 Cancri AB star system and why life began to produce oxygen
Posted by David M. Merchant at 10:11 AM
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Drake Equation Calculator

Estimates the number of advanced Milky Way galaxy civilizations we potentially could communicate with.

Dr. Drake's original estimates are already inputted; type in your own values:

Drake Equation

stars/yr

%

planet(s)

%

%

%

years

civilizations

where:

  • N = number of civilizations
  • R = ave. star formation rate
  • fp = % with planetary systems
  • ne = ave. number of planets that can possibly support life per system
  • fl = % of the above planets where life actually begins
  • fi = % of inhabited planets where intelligent life evolves
  • fc = % of intelligent life that develop technology capable of interstellar communication
  • L = Lifetime of all fc civilizations on a particular planet

For more information see my Introduction to the Drake Equation post and related posts with label Drake Equation.

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How to Cite Blog Posts

[-]MLA (third ed. - 2008) format:

Merchant, David. "Blog post title." Alien Realities. Blogger. Date of post. Web. Date you accessed the post.

URL of post is optional. This is a change from earlier (pre-2008) MLA guidelines.

For example:

Merchant, David. "Alternate/Parallel Universes in the Multiverse." Alien Realities. Blogger. 30 July 2008. Web. 10 Aug. 2008.


[-] APA format:

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For example:
Merchant, D. Alternate/Parallel Universes in the Multiverse. Retrieved 10 August, 2008, from http://alienrealities.blogspot.com/.


[-] Chicago Style (Turabian, 7th ed. - 2007) format:

  • Note:
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