Back in 2002, a star with the name V838 Monocerotis brightened dramatically in a mysterious outburst. This particular star was so far not visible with naked eye, but suddenly it became so bright, that someone could barely see it. It was not a supernova, because the star did not explode. What did happen, is that the star emitted a burst of light, and as this light traveled along the universe, it revealed the -so far- unseen dust. We do not know what caused this phenomenon. Watch the following video from Hubble Site Channel.