A comet, now hidden in the Sun's glare, could become a notable presence in the evening sky by late next week, if it's not incinerated by its close solar passage. By late next week, a small comet, fresh off a harrowingly close encounter with the Sun, could emerge into the evening twilight and become easily visible in the hour after sunset, sporting a thin, straight tail. Or this object, known by the prosaic de... [7866 chars]