Resembling a  Fourth of July skyrocket, Herbig-Haro 110 is a geyser of hot gas from a  newborn star that splashes up against and ricochets off the dense core  of a cloud of molecular hydrogen. Although the plumes of gas look like  whiffs of smoke, they are actually billions of times less dense than the  smoke from a July 4 firework. This Hubble Space Telescope photo shows  the integrated light from plumes, which are light-years across.

Herbig-Haro  (HH) objects come in a wide array of shapes, but the basic configuration  stays the same. Twin jets of heated gas, ejected in opposite directions  away from a forming star, stream through interstellar space.  Astronomers suspect that these outflows are fueled by gas accreting onto  a young star surrounded by a disk of dust and gas. The disk is the  "fuel tank," the star is the gravitational engine, and the jets are the  exhaust.

http://hubblesite.org/newscenter/archive/releases/2012/30/image/a/format/large_web/（SY）