Hubble studies giant green blob

Get a load of the strange glob of gas now under scrutiny by the Hubble Space Telescope. (picture at title link.)
This was another amateur discovery: Hanny van Arkel, a Dutch teacher, found it while participating in an online galaxy-classification program called Galaxy Zoo. The bizarre stellar gas cloud is so weird it's simply known as Hanny's Voorwerp (Dutch for Hanny's Object). It looks rather like one of those unclassified interstellar phenomena that the crew of Star Trek:TNG seemed to run into about every other week.
"Look at the heavens, and never cease to wonder..." (me)