Tag Archives: geography

Landmarks Bridges

But the confusion persists in the understanding of some. For example, when China, placed a man in the space for the first time, in 2003, some voices had been heard affirming that the country was to send a man to the Moon. In the occasion where the astronaut Landmarks Bridges became the first Brazilian in the space, in 2006, many had been the people whom if they related to the mission affirming that it would go to the Moon. Until August of 2010 nothing than 274 ships less manned they had been launched to the space. Of these, only 9 had been sent to the Moon and 6 of these only are that they had really settled in the satellite (SPACEFACTS, 2010). These confusions certainly contribute to make it difficult the understanding of space sciences.

Lack of gravity in the space Some didactic books bring the concept of that a time an astronaut having reached the space it will be in an environment where the gravity force inexists and, therefore, will be floating without weight. In the truth, a ship in orbit of the Land is under action of the terrestrial gravity in such a way how much a body in the surface of the planet. The astronauts in orbit float not because the force of the gravity is much more weak to that distance of the soil. In the truth, in a terrestrial orbit she lowers the gravity force is about 90% of that one that we try here in the surface. What it occurs is that a ship in orbit is in a state of permanent free fall. However, as the vehicle is in high speed, the curve that it describes when falling is opened the point to make it ' ' errar' ' the planet the time all, turning around of it instead of going to soil.