Black Holes – clues on how they form?

This story is at http://phys.org/print318686699.html … an explosion at the outer reaches of the universe provides clues, it is said, on how black holes form – but you might take this with a pinch of salt. At www.dailygalaxy.com/my_weblog/2014/05/surprising-discoveries-in-the-orio… … which shos stars on the outskirts of clusters which appear to be older than the stars in the centre, differing from consensus views on star formation.