bdking writes: Astronomers continue to discover planets outside our solar system, with the latest being located in the constellation Pictor, about 42 light years from Earth. This comes two weeks after an exoplanet was found "just" 4.4 light years from our planet. What are the various techniques scientists use to identify exoplanets?
Thus mathematics may be defined as the subject in which we never know
what we are talking about, nor whether what we are saying is true.
-- Bertrand Russell