Hubble Confirms Nature of Mysterious Green Blob

In 2007, Dutch secondary school biology teacher Hanny van Arkel spotted something mysterious in the night sky. Combing through Galaxy Zoo, an online database set up to enlist the public's help in classifying galaxies, she came across a glowing green smudge of light approximately 650 million light-years away. via Hubble Confirms Nature of Mysterious Green Blob - ScienceNOW.