Since I don't see a press release online re. another #AAS219 press conference item, here's the key picture: a non-observation of SN 2011fe in M101 by the PIRATE telescope on Mallorca drastically restricts the size of the exploding (primary) object to a mere 2% of the solar diameter (vast improvement over Nugent & al. in Nature last month). So it *must* have been a degenerate object, i.e. a white dwarf. (J. Bloom)