Axial rotation describes a point on the edge of a plane that moves at right angles to its centre in a way that will cause it to first approach, then recede from any given direction. In other words, if you place a marker on a wheel standing on the ground, that marker will first travel […]Read More “The moon rotates on its axis” Oh, no it doesn’t!
It was not until man began to explore the universe with telescopes that he began to consider the question of the speed of light. In the early seventeenth century, the famous Italian scientist, Galileo, first attempted to measure the speed of light, unsuccessfully. But, about fifty years later, the Danish astronomer, Ole Römer, in 1676, measured the speed of light by […]Read More The Speed of Light