How will spectroscopy determine the elements and composition of the atmospheres of exo planets? I ask this question because the light is not of a pure nature, it has been stretched squeezed and affected by other elements on its journey to the telescope that is receiving the photons. This will cause the information that is received to be distorted beyond any hope of a computer algorithm being able to get rid of the noise and giving a clear picture of the situation in the exo planets atmosphere. Sorry to put a damper on things but it will be impossible to find other Earths with this method and with current technology feasibility. Other ways of reading the soup of celestial particles must be approached with a firmer hand on reality, thus more research on the matter must be instigated with a new hope for mankind and its instruments of the senses.

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