Astronomers are scratching their heads over an unusual comet that is
passing by the sun. The icy visitor to the inner solar system does not
belong to any known family of sungrazing comets, and it appeared to be
doomed as it made its plunge toward the sun on Feb. 19th. Instead of
disintegrating, however, the comet has emerged apparently intact, and
could become a target for telescopes on Earth when it emerges from the
sun's glare in the weeks ahead.