As well as why under what laws there is a process of heating of water in the conditions of terrestrial gravitation, speaks in textbooks by physics. But after the first space flights of many interests a question of behavior of this liquid in zero gravity. Whether it is possible to heat it? It appears, it is possible, but absolutely in a different way, not so, on Earth.

At a view of the night sky it is difficult to present how enormous and immense open spaces are behind flickering stars. Long since people asked themselves a question: whether the Universe is infinite or has borders? Only scientists of the future will be able to give final and definite answer, probably.

The term "light year" occurs in many scientific articles, popular telecasts, textbooks and even in news from the world of science. However some people are sure that the light year is a certain unit of measure of time though actually advanced in years it is possible to measure also distance.

A story about space travel from which astronauts come back to the grown old friends the same young people do not excite creation any more as many years ago. However and today the question of a current of time on Earth and in space is clear not to everyone.