This is an excellent discovery, and a very nice format for researchers to present their findings to the general public: an abstract and links to “How did we find it?”, “What does it mean?”, details of the ongoing project, and the actual paper.
This discovery is a star with extraordinarily low metallicity, indicating that it formed from gas that was almost unpolluted by earlier supernovae.
h/t Sean Kelley
http://www.mso.anu.edu.au/~stefan/StefanKeller/OldestStarFound.html