A Herbig-Haro (HH) object is
A) a small galaxy just outside the outer edge of the Milky Way
B) where a jet from a star in the process of being born collides with (and lights up) a nearby cloud of interstellar matter
C) a part of a giant molecular cloud where molecules containing two hydrogen atoms form
D) a star that has too little mass to start fusion in its core
E) cluster of very low-mass stars, observable only with infrared radiation
Correct Answer:
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