2. NASA's Cassini spacecraft finds ingredient of household plastic in space

     This article shows NASA's Cassini aircraft first discovered the plastic ingredient on planet, Titan. It is remarkable fact to space scientists as there were not any detection of plastic ingredients has been found on any moon or planet, other than Earth.
 Scientists in this article used  Composite Infrared Spectrometer (CIRS) which measures the infrared light or heat radiation to identify 'Propylene'. Even it was difficult topic to understand, the writer used wonder appeal to make readers familiar with this topic. And also, he gave some background information in between, so it was easier to understand with the additional information.

           
Source:http://esciencenews.com/articles/2013/09/30/nasas.cassini.spacecraft.finds.ingredient.household.plastic.space