This survey is being done in commemoration of the first SETI (Search for Extraterrestrial Intelligence) experiment, Project Ozma, which was launched in April 1960 by radio astronomer Frank Drake. He named it after the princess Ozma in the L. Frank Baum series: "The Land of Oz."
Shin-ya Narusawa of Nishi-Harima Astronomical Observatory in Japan launched the commemorative Project Dorothy, named after the Oz heroine memorialized by actress Judy Garland in the 1939 film musical production of Baum's "The Wizard of Oz."
The SETI Institute will observe five target stars using the new Allen Telescope Array (ATA), located in northern California. The ATA will examine these stars between 1:00 a.m. and 5:00 a.m. Pacific Daylight Time, on November 6.
Any chance for success? Let's take a look at the ATA's target stars from nearest to farthest:
One of Project Ozma's very first targets, this orange dwarf star lies just 11 light-years away. It has two belts of rocky and icy debris. A Jupiter-size planet has been confirmed Inside the innermost belt. The gas giant world is in a very elliptical orbit that shuttles it from a distance just beyond that of Mars' orbit to closer than Venus' orbit is to the sun. And, this carries the planet inside the star's habitable zone briefly once every 12 years. Any accompanying moons would alternately bake and freeze over the roller-coaster orbit. The star is estimated to be only 600 million years old. That's way too young for the evolution of technological intelligent life as we know it.