A dwarf irregular galaxy that is a satellite of the Milky Way, situated about 210,000 light-years away in the constellation Tucana. The SMC is characterized by its low metallicity and active star-forming regions like NGC 346.
Source: science.nasa.gov
25/01/1998

Almost unknown to casual observers in the northern hemisphere, the southern sky contains two diffuse wonders known as the Magellanic Clouds. The Magellanic Clouds are small irregular galaxies orbiting our own larger Milky Way spiral galaxy. The Small Magellanic Cloud (SMC), pictured here, is about 250,000 light years away and contains a preponderance of young, hot, blue stars indicating it has undergone a recent period of star formation. There is evidence that the SMC is not gravitationally bound to the LMC.