Astronomy
How many voices could share the Galaxy?
Change the assumptions in the Drake equation. Explore how communicative lifetimes and uncertain biological fractions change the expected number of contemporaries.
The model and its limits
A conditional steady-state Drake calculation, not a measurement of extraterrestrial life. The interval samples chosen log-uniform assumptions, not an observational posterior. P(at least one) additionally assumes Poisson counts. Beacons are illustrative and capped at 200; radio waves travel at light speed on the labelled galactic scale. Timeline covers the smaller of the communicative lifetime and 60,000 years.
Equations used in the module
Equations N = R_* f_p n_e f_l f_i f_c L; P(at least one | assumptions) = 1−exp(−N).
