After a training session of about 15 months, Valentina Tereshkova had been chosen as the first woman to go to space. Among other reasons, her image as a "common girl" – as well as the fact that her father died as WWII hero, contributed to this choice. It was like a dream come true moment in her life and she made up her mind to meet all the challenges in the space exploration program. On June the the 16th, 1963, Valentina Tereshkova created history by orbiting the earth 48 times in Vostok VI. Saying "Sky, take off your hat!", she entered the vessel that was launched into the orbit. She stayed for almost 3 days in space and proved that female cosmonauts are also capable of stepping into space as men. The photographs of the horizon taken by her during the mission have helped scientists to study the aerosol layer within the atmosphere of Earth.