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The Jets Are in Gear

Credit: ESO/M.McCaughrean
Tuesday, Oct. 13, 2015: A pair of jets shoot outwards with near-perfect symmetry from Herbig-Haro object (HH) 212. The object lies in the constellation…Read More »

of Orion (The Hunter) not far from the Horsehead Nebula. A young star only a few thousand years old lies at the center of the object, surrounded by an accretion disk of leftover material from the star’s formation, seen here edge-on. The star’s jets shoot out in a symmetric fashion, with several knots appearing at relatively stable intervals. This stability suggests that the jet pulses vary quite regularly, and over a timescale that may be as short as 30 years. The image was taken by ESO’s decommissioned Infrared Spectrometer And Array Camera (ISAAC), released Oct. 12, 2015.

— Tom Chao   Less «
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