world development and scientific research

Why Do Craters Exist on the Moon? Because Earth is far larger than the Moon, a meteoroid has a larger area to impact, increasing the likelihood that it may collide with the planet. On the other hand, we only know of roughly 180 craters on Earth but we can see thousands on the Moon! How come? In actuality, during the course of their lengthy 4.5 billion-year histories, both the Earth and the Moon have been struck numerous times. Where did all the craters on Earth vanish? The primary distinction between the two is that Earth possesses mechanisms that may virtually completely wipe out any traces of previous collisions. Moon doesn't do that. On the Moon's surface, very much any small ding will remain there. Earth's surface is kept clear of craters thanks to three mechanisms. The first one is known as erosion. Plants, water, and weather all exist on Earth. Together, these cause the ground to deteriorate and disintegrate. Over time, erosion can reduce a crater to almost ...

 How Does GPS Function? The GPS system consists of more than 30 orbiting navigational satellites. Because they are continually sending out signals, we know where they are. Your phone's GPS receiver watches for these signals. The receiver can determine your location after calculating your distance from four or more GPS satellites. Since ancient times, people have used the sky to navigate. The constellations in the night sky were utilized by ancient seafarers to determine their location and course. Today, all we need to know our exact location is a hand-held GPS receiver, also known as the global positioning system (GPS). To determine our location and how to get to other locations, we still need objects that are high in the sky. We make use of satellites rather than stars. There are about 30 navigation satellites circling the Earth at a great altitude. These satellites are able to pinpoint our location. What exactly is GPS? A system, GPS. Receivers, base stations, and satel...