Аннотация:Very few SNe Ia were observed so far at the UV spectral range, although it should contain plentiful information on the physics of explosion. This range is connected more tightly to the distribution of radioactive nickel, that provides the most of energy of this type of supernovae. The supernova theory needs more UV observations of SNe Ia. Besides, it needs regular sky surveys by space UV telescopes, since the light of SNe Ia reaches its maximum in UV range earlier than in optics. Such surveys will allow to detect supernova explosions at earlier epoch.