We know that the atmosphere at the Earth's surface produces a pressure equal to the weight of a large automobile on each square meter. We do not notice this since it is equal both inside and outside our bodies. But if the air inside a metal pot is, for instance, forced out by boiling water inside it, the pot collapses under this pressure.Similarly, an unprotected astronaut in a space flight would ...  Read more »

Fourth Dimension is time. Three dimensions is relate to length, width and height that any solid object has.so three dimensional space is familiar to all and it is easily visualized. But fourth dimension cannot be visualized in the same way, though there is experience of time factor....  Read more »

Dec. 21, 2012, won't be the end of the world as we know, however, it will be another winter solstice. Contrary to some of the common beliefs out there, the claims behind the end of the world quickly unravel when pinned down to the 2012 timeline....  Read more »