Epsilon Eridani

This constellation contains Epsilon Eridani, the 10th nearest star to Earth at a distance of 10.5 light-years and one of the targets of Project Ozma, the first search for extraterrestrial intelligence. The ancient Greeks identified Eridanus with rivers from both geography (e.g., the Nile and the Po) and…

…orange K-type stars such as Epsilon Eridani and finally to M-type red dwarfs thousands of times fainter than the Sun. The sequence is continuous; the luminosities fall off smoothly with decreasing surface temperature; the masses and radii decrease but at a much slower rate; and the stellar densities gradually increase.

…oriented to two nearby stars, Epsilon Eridani and Tau Ceti. On the basis of the Drake equation, it would be very unlikely that success would greet an effort aimed at two stars only 12 light-years away. Not surprisingly, Project Ozma was unsuccessful. Related programs organized on a larger scale were…

…at two nearby stars (Epsilon Eridani and Tau Ceti, both about 11 light-years from the Earth) that resemble the Sun and seem reasonably likely to have inhabited planets.