Shock waves in gas and dust
In this slideshow, we've put together a sampling of photos from the past 1,000 days.
Nicknamed the "Tornado" nebula, light emitted from a shocked molecular hydrogen, visible here in green, is believed to be caused by an outflowing jet of material from a young star that has generated shock waves in surrounding gas and dust.
April 19, 2012 10:35 AM PDT
Photo by: NASA / JPL-Caltech / J. Bally (University of Colorado)
| Caption by: James Martin
Conversation powered by Livefyre