jump to other results. 1  1[countable] a particular attitude towards something; a way of thinking about something synonym viewpoint a global perspective Recent events seem less serious when put into an international perspective.
Low earth orbit is only slightly above the Earth, by outer space standards, 124 - 1240 miles (200 - 2000 km) in altitude. Below 124 miles, orbits rapidly degrade, causing surface impact, and above 1,240 miles or even less, the Earth's radiation belts damage electronic equipment, necessitating special shielding. The region from 1,243 miles altitude to geostationary orbit (35,786 kilometers or 22,236 mi) is known as Medium Earth Orbit.
We didn't know how big it was, and we didn't know how far away it was. We orbit the Sun at a distance of about 150 million kilometers. This number is actually an average, since we follow an elliptical path.At its closest point, the Earth gets to 147 million km, and at its most distant point, it's 152 million km.Distances in the Solar System are so vast that astronomers use this distance as a standard for measurement, and so the average distance from the Earth to the Sun is called an astronomical unit.e didn't know how big it was, and we didn't know how far away it was. We orbit the Sun at a distance of about 150 million kilometers. This number is actually an average, since we follow an elliptical path.