This winter, a new coronavirus is scaring the world. Coronavirus is actually a sort for virus, that is not normally very aggressive. Coronavirus normally give us common colds, but the last decades, new and more aggressive diseases caused by coronavirus have emerged. SARS (in the period 2002-2004) and MERS (around 2018) both belonged to the coronavirus family. And now, the new nCov-2019 from Wuhan. I have here made a 3D-model of a typical coronavirus particle.