Astrophysics deals with physcis in the universe and helps us to explain what is out there and how it works. Chemistry contributes to our understanding of the universe through understanding what the universe is made of and it’s chemical composition. So for example the Philae probe that landed on a comet yesterday has an instrument on board which can perform analysis of soil samples to determine the content of volatile compounds present.
More info here: https://en.wikipedia.org/wiki/Philae_%28spacecraft%29 http://www.esa.int/Our_Activities/Space_Science/Rosetta/The_Rosetta_lander
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ThomasA commented on :
Thank you very much. That is really helpful