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.
Top Speed: 153,800 mph. To escape Earth's gravitational pull, an object must be traveling around 25,000 mph. Accordingly, planetary probes are the fastest objects humankind has engineered. In 1976, the Helios 2 orbiter became the fastest manmade object, traveling twice the speed of Earth's orbit around the sun.