Astronomy 2021A/B Lecture 2: Astro 2021 - Lecture 2.docx
22 Sep 2014
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Document Summary
The new science of astrobiology: study the range of conditions conductive to the origin and existence of life, look for such conditions on other planets in our solar system and around other stars, look for such conditions on other planets in our solar system and around other stars, astrobiology: a science that tell us conditions that exist on other worlds that, to do astrobiology, we need to use light and matter to tell us information about allow life the planet. Light and matter: wave, wave speed = wavelength x frequency, speed of light = constant (c, for light: x f = c, particle (photon, energy = constant x frequency (e = h x f, radiation in order of increasing energy: . How light and matter interact: emission, absorption, transmission, transparent objects transmit and diffract light, opaque objects absorb light, all 3 above may occur at the same time, reflection or scattering.
