The photograph shows the structure of HH111, which is a Herbig-Aro object in the dark cloud L1617: it is located in the
Aro forms when gas ejected by a young star reacts with nearby clouds of gas and dust: this happensat a speed of several hundred kilometers per second.
Objects of this type do not live long, the maximumtheir lifetime is several thousand years. They develop almost "before our eyes": in the pictures taken even at relatively small intervals, their high speed of penetration into the interstellar gas clouds is noticeable.
From Hubble's observations, one can see the complex evolution of these regions over a period of only a few years: while some parts fade, others brighten, colliding with the matter of the interstellar medium.
The object was filmed on the Wide Field Camera 3 (WFC3) aboard the Hubble Observatory.
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