Welcome! “Alien Life” tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. You may notice that this and future entries are shorter than usual; Career, family and book deal commitments have forced me to cut back some of my projects. Now, here’s today’s news:
g Abodes - There's a lot of ice beneath the surface of Mars, and some believe there could be liquid water as well. NASA and European Space Agency spacecraft are now using ground-penetrating radar to peek under the Martian soil. In this interview, Jeff Plaut discusses the latest findings of ESA’s MARSIS radar. See http://www.astrobio.net/news/modules.phpop=modload&name
=News&file=article&sid=2274mode=thread&order=0&thold=0.
g Message - During the early 1980s, David Brin offered an explanation for Fermi’s Paradox, which asked why if extraterrestrial life existed it wasn’t on Earth. Brin’s answer: The Zoo Hypothesis. Here’s a copy of that groundbreaking paper, “The 'Great Silence': The Controversy Concerning Extraterrestrial Life “ at http://brin-l.stock-consulting.com/downloads/silence.pdf.
g Cosmicus - If you think shipping freight from Cincinnati to El Paso is challenging, imagine trying to deliver an oxygen generation unit from the Earth to a remote location on the moon. By 2020, NASA plans to establish a long-term human presence on the moon, potentially centered on an outpost to be built at the rim of the Shackleton crater near the lunar South Pole. See http://spaceflightnow.com/news/n0703/22supplychain/.
g Learning - NASA’s free Astrobiology Education Poster illustrates in words and pictures the fundamental questions addressed by astrobiology: What is life? Where is it? How do you find it? Three activities have been developed to explore these themes. It’s great for teachers — or parents looking to spend some quality time with their children. See http://nai.arc.nasa.gov/poster/index.cfm.
g Aftermath - How might we characterize the political significance of any announcement of discovering extraterrestrial intelligence? How about using the Torino Scale, which characterizes asteroid impacts, as a model to assist the discussion and interpretation of any claimed discovery of ETI? See http://64.233.167.104/searchq=cache:
BuuaRaF64gUJ:www.konkoly.hu/staff/almar/almar_rio.doc+"Interpret
ing+and+Reporting+on+a+SETI+discovery"&hl=en.
The Drake Equation
This formula estimates the number of intelligent civilizations in our galaxy.N=(R*)(Ns)(Fp)(Ne)(Fl)(Fi)(Fc)(L)
Where:- N = Number of civilizations we can communicate with
- R* = Average star formation rate
- Ns = Percentage of stars capable of supporting earth-like planets
- Fp = Percentage of those stars with planets
- Ne = Average umber of planets in those stars' habitable zones
- Fl = Percentage of those planets where life begins
- Fi = Percentage of planets with life where an intelligent species evolves
- Fc = Percentage of those intelligent species that develop communication technology
- L = Average lifetime, in years, of a civilization that develops such technology
About Me
- Rob Bignell
- I'm the owner and chief editor at Inventing Reality Editing Service, which meets the editing and proofreading needs of writers both new and published. For more than two decades, I worked as an award-winning journalist, with half of those years spent as an editor. Several of my short stories in the literary and science fiction genres have been published, and I am the author of the nonfiction “Hikes with Tykes” series, a novel "Windmill", and a collection of poetry, "Love Letters to Sophie's Mom". For seven years I worked as an English teacher or a community college journalism instructor. I hold a master's degree in English and a bachelor's in journalism and English.