Matteo Cantiello deleted Ne.tex  about 10 years ago

Commit id: 20779250bab186da918908893d9d945bcd48fb05

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$n_e$ Is the \textbf{fraction of Earth-like planets}.   As from last year we also know this factor! Earth-like planets are very common. Statistically speaking at least 1 in 5 planets around Sun-like stars could potentially support life \cite{Petigura_Howard_Marcy_2013}. $n_e \approx$ 0.2         

figures/Drake3/Drake_Annotated.jpg  Equation.tex  Updating Drake Eq.tex  Ne.tex  Box.tex  Astrobiology.tex  fc.tex