Astrophysicist: Gamma ray bursts (GRBs) -- explosions of powerful radiation from deep space -- have traditionally been classified as either short or long,  terms that reflect the explosion' s relative duration  However, an unusual GRB has been sighted  Its duration was long, but in every other respect it had the properties of a short GRB
Clearly, the descriptive labels short and long have now outlived their usefulness
Properties other than duration are more important than duration in the proper classification of the unusual GRB.