A faint blue galaxy (FBG) is an inconspicuous, often small galaxy with low surface luminosity. In addition to being dim, they show a remarkable preponderance of sparsely scattered blue stars, but comparatively few red stars, which in most galaxies are by far the most common. They appear as dim, bluish smudges on old photographic plates, with no clear structure or shape, and do not register well on modern electronic cameras, which are more sensitive to red light. They are currently interpreted as small dwarf-irregular satellite-galaxies undergoing a burst of star formation.[1]