... In such a way the most exceptional experiments on the radiolocation of the Sun, the Moon and the planets of the Solarsystem are carried out. Back .. ...
... time is an astronomic time counting where the day and the night duration is equal to the period of the Earth rotation around its axis relatively to the system of stable stars. 24 star hours are equal to 23 hours 56 min. 4,091 sec. of the medium solar time ...
... The local average solar time of Greenwich meridian is called the world time . ... For practical convenience there is a system of zone time in the most countries. ...
... In the majority of double systems, being the sources of X-rays radiation, the invisible component mass does not exceed the two solar masses, so it is a neutron star. ...
... like the Moon shines by the reflected solar light and has the phases like our ... many craters, some of which has the systems of light beams only dark spots, like the ... B ecause of the Sun Mercury is influenced by the solar wind . ...