Flight, the element of air, is a dream and goal that has hypnotized man for thousands of years. Earth's gravity is a harsh reality that opposes this dream and which nature inevitably takes into account. Evolution approached flight rationally: if it is necessary to fly in order to preserve a species, the means for this will certainly appear, even if it takes millions of years. Man, in turn, came up with many ways to rise into the air and travel long distances: a long way has been traveled from the wings of the mythological Icarus to the airplane due to the fact that at all times there are people who are capable of flying high in their imagination, even while remaining on the ground. It is they who accumulate knowledge, discover new things and lead the way: “Perhaps the same thirst for adventure that overwhelmed the Polynesians who discovered new islands still lives today in that “call of space” that encourages representatives of our species to colonize Mars - and, Perhaps in the distant future we can reach the stars?” The publishing layout of the book is saved in PDF A4 format.