"The great question: is that bright thing just a cloud of dust and very fine rubble, soon to disperse? Or will it hold together along the comet's orbit long enough to be seen when it moves far enough from the Sun to be seen from Earth? And do big chunks remain within it that can keep shedding the stuff of a coma and tail in proper comet fashion? "
http://www.skyandtelescope.com/commu...193909261.html