(See description below)
Stellar Jet HH 151
image shows an object known as HH 151, a bright jet of glowing material
trailed by an intricate, orange-hued plume of gas and dust. It is
located some 460 light-years away in the constellation of Taurus (The
Bull), near to the young, tumultuous star HL Tau.
In the first few hundred thousand years of life, new stars like HL Tau
pull in material that falls towards them from the surrounding space.
This material forms a hot disc that swirls around the coalescing body,
launching narrow streams of material from its poles. These jets are
shot out at speeds of several hundred kilometres per second and collide
violently with nearby clumps of dust and gas, creating wispy, billowing
structures known as Herbig-Haro objects — like HH 151 seen in the image
Such objects are very common in star-forming regions.
They are short-lived, and their motion and evolution can actually be
seen over very short timescales, on the order of years. They quickly
race away from the newly-forming star that emitted them, colliding with
new clumps of material and glowing brightly before fading away.