I came across an interesting article in the Feb/Mar 2010 issue of the Australian Sky and Telescope magazine. It is titled "Where have all the aliens gone? by Jacob Haqq-Misra and Seth D Baum.
In 1950 Enrico Fermi "...made a back-of-the-envelope calculation to estimate the time required for a technological civilisation to spread throughout the galaxy."
"So if any technological extraterrestrial society exists, then they should have visited us by now."
Arguments put forward to explain why we are not being visited by ETs include:
* Life on Earth is a statistical anomaly
* Civilisations blow themselves up
* A Prime Directive may prevent them from revealing themselves.
The authors of this article question Fermi's assumptions and suggest that "If growth outstrips resources, human civilisation may collapse." Therefore, perhaps this explains the absence of ET visits to Earth.
Background On 5 July 2020 , U.S. researcher Joe Murgia, drew our attention to a comment made by Dr. Bob McGwier, on the Facebook page o...
Hi all, Every now and then a book comes along which challenges your personal viewpoint. This post is about such a book. The subject is sle...
An investigation by Marc Cecotti and Keith Basterfield Introduction Thanks to the great investigative work of Roger Glassel and Cur...
An investigation by Marc Cecotti and Keith Basterfield In our previous articles we reported that investigators and translators f...