The ruler length and width measurements reflected the largest bias, regardless of wound shape [8]. The standard error of measurement (SEM) is defined as the difference between an observed score and a true score, so the SEM is an indication of the imprecision of a measurement technique [17].
Washington: Runaway planets zipping through space at mind-numbing speeds of 30 million miles per hour are now the fastest objects in the universe, says a study. Seven years ago, the discovery of the first runaway star, shooting out of our Galaxy at a staggering speed of 1.5 million mph, set astronomers on a course of exploration.
The record for fastest launch velocity belongs to the New Horizons probe, which lifted off in 2006 on a mission to Pluto and the Kuiper Belt. This 1,054-lb. (478 kilograms), piano-size spacecraft sped away from the Earth at a blistering pace of 36,000 mph (almost 58,000 km/h).