MARS [Mars] in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Physical Characteristics Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass.

The great German poet Goethe once said: «He who know no foreign language does not know his own one. Learning foreign languages is specially important nowadays. Some people learn foreign languages because they need them in their work, others travel abroad, for the third studying languages is a hobby. Every year thousands of people from Russia go to different countries as tourists or to work.