The Local Leo Cold Cloud

I've been fascinated with the Local Bubble, a region nearly empty of stars containing hot but low-density gas within the Milky Way near our Sun. Especially since it appears that the mysterious object Geminga, a radio-quiet x-ray plusar, might be the cause of this bubble. The preprint The Local Leo Cold Cloud and New Limits on a Local Hot Bubble describes a very cold cloud of gas within the Local Bubble - Curiouser and Curiouser.