Please forward this error screen to 158. This article is about Frank Drake’s equation. The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. Accounting equation questions pdf equation summarizes the main concepts which scientists must contemplate when considering the question of other radio-communicative life.
Criticism related to the Drake equation focuses not on the equation itself, but on the fact that the estimated values for several of its factors are highly conjectural, the combined effect being that the uncertainty associated with any derived value is so large that the equation cannot be used to draw firm conclusions. Has intelligent life ever existed? In September 1959, physicists Giuseppe Cocconi and Philip Morrison published an article in the journal Nature with the provocative title “Searching for Interstellar Communications.
Cocconi and Morrison argued that radio telescopes had become sensitive enough to pick up transmissions that might be broadcast into space by civilizations orbiting other stars. This is the wavelength of radio emission by neutral hydrogen, the most common element in the universe, and they reasoned that other intelligences might see this as a logical landmark in the radio spectrum.
One in a million has planets around it. Only one in a million million has the right combination of chemicals, temperature, water, days and nights to support planetary life as we know it.