Raymondhow's recent quiz on astronomical matters had a very interesting question. Can you name the present constellations represented in the ancient constellation Argo Navis?
The answer is Puppis, Carina, and Vela. After the quiz I checked out Argo Navis via google and came across a link to Claudius Ptolemy and I found that he had organized it into a constellation back in the 2nd century. He had a very interesting life and certainly had a significant impact on astronomy for over 1500 years. Rather than summarizing all of that I thought I'd share the link:
I found it most interesting.