News and backgrounders on the Search for ExtraTerrestrial Intelligence and other topics on life in the Universe.
The Chance of Finding Aliens
By Govert Schilling
In 1961 astronomer Frank Drake wrote the equation that put the search for alien civilizations on a scientific footing and launched the modern SETI movement. How do the equation's numbers look nearly 40 years later? Updated June 1999.
SETI Searches Today
By Alan M. MacRobert and Andrew J. LePage
Bigger and better hunts than ever are seeking radio and laser emissions from other civilizations. Here’s a rundown of all the major searches now under way, comparing the capabilities of each. Updated July 1999.