In August of 2010, the nebula known as Ira's Ghost was photographed by the Hubble Telescope within the constellation Taurus. First discovered in 1983, it is a "reflection nebula" lit by an external light source rather than an "emission nebula" lit from within. What is puzzling NASA scientists is that they do not know the source of the light. There should be a bright star nearby, but that is not the case. The image was snapped by the Hubble telescope as part of a "wish list" for the telescope to do when there was spare time.

Does anyone know how many light years from Earth that Ira's ghost is hanging out?