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 Andromeda Galaxy (M31) is the closest spiral galaxy to us, and though itâs gravitationally bound to the Milky Way, itâs not the closest galaxy by far â being 2 million light years away. Andromeda is currently approaching our galaxy at a speed of about 110 kilometers per second.