";s:4:"text";s:2785:"Thus our best estimate for the bulk moon U content is roughly 17 ng/g. Red stars are the coolest while the bluish-white stars are the hottest. Orbiting the planet at an altitude of 330-435 kilometers above the surface of Earth, the International Space Station experiences a wide range of temperatures. Since the ancient time of volcanism, the arid, lifeless Moon has remained nearly unchanged. With too sparse an atmosphere to impede impacts, a steady rain of asteroids, meteoroids, and comets strikes the surface. The dependence of surface temperature on the internal heating is studied here. The ISS experiences a wide range of temperatures. This loss of internal heat was measured by the Heat Flow Experiment on Apollo 15 and 17. surface temperatures, and measurements of surface temperatures in these regions may help to estimate the internal heating rate and, consequently, the thickness of the ice (see, e.g., Ashkenazy et al., 2018). This structure is believed to have resulted from the fractional crystallization of a magma ocean shortly after its formation about 4.5 billion years ago. The early Moon may have developed an internal dynamo, the mechanism for global magnetic fields for terrestrial planets. Independent constraints on lunar internal temperatures derived from magnetic and tectonic data are best matched by models with ≈14 ng/g U. The temperature of a star is related to its color. The Heat Flow Experiment involved drilling two holes into the regolith to depths of 1.6 to 2.3 meters. Olivine basalt collected by Apollo 15. Vega, a white star releases 11,000° Celsius and Rigel, a bluish- white star emits as much as 20,000° Celsius. Over billions of years, the surface has been ground up into fragments … Some stars such Vega and Rigel is much hotter than the Sun. These results imply that the bulk moon contents of U, and related refractory lithophile elements such as Th, Al, Ca, etc., must be considerably lower than commonly assumed. Moon's internal structure. This experiment was also attempted on Apollo 16, but failed due to a broken cable connection. Being a yellow star, the Sun emits extreme temperature but not that high as the white ones.