Earth’s Orbit Around The Sun – Universe

A satellite is AN object that goes around, or orbits, another object. The Moon is a natural satellite of the Earth. We have also launched many artificial satellites, usually simply called “satellites”. for purposes such as surveying the land.telecommunications, tracking to other and spying on possible enemies out the on to is also a satellite – of the Sun The Ea se on its own axis produces day and night to elongated or elliptical orbit around the Sun gives us the seasons. The Earth spins like a top around its axis, which is an imaginary line passing through the North and south Geographic poles.

It turns around once every 24 hours. From the surface, it seems as of the Sun is passing across the sky during the day, and then disappearing below the horizon at night. As the Earth spins, it also whirls through space at 30 Kilometres every second, on its year-long journey or orbit around the Sun. The axis of spin is not at right angles to the level or plane of the orbit. This means, for part of the year, that the upper half or Northern Hemisphere of the Earth is tilted nearer the sun, giving the warmer temperatures of summer. The tilt of the Earth’s axis, at 23.5° to its orbit around the Sun, produces seasonal changes on Earth. At the Equator the Sun is directly overhead at midday on the spring (vernal) and autumnal equinoxes in the calendar months of March and September. At the summer solstice (midsummer) in June, it is highest in the sky as seen from the Northern Hemisphere, bu, lowest as seen from the Southern Hemisphere, where it is midwinter. The Antarctic Circle is tilted away from the Sun, so the Sun does not rise in the sky. Meanwhile the Arctic Circle is facing the Sun and so the Sun never sets. Six months later the situation is reversed During winter, the Sun is above the horizon for less time compared to summer. Also it does not rise so high in the sky, so its rays pass at a slanting angle through the Earth,s atmosphere. The result is that less of the Sun’s warmth reaches the ground, so temperatures are lower. Meanwhile in the opposite hemisphere, the Sun is higher in the sky for longer each day. Its rays pass almost Vertically down through the atmosphere.This gives higher temperatures. The Moon goes around or orbits the Earth at an average distance of 384,400 kilometres. But the orbit is elliptical,so this distance varies from 356,000 to 407,000 kilometres. One orbit takes about one month. More accurately, it takes 27.3 days for the Moonto orbit the Earth, with respect to the hardly changing background of the stars. This is a sidereal month. But the oooo takes 29.5 days to orbit the Earth with respect to the Sun, because during this time the Earth has moved on in its own orbit around the Sun. This is a synodic month. The Moon does not make its own light. It shines with reflected sunlight. The portion of the sunlit part of the Moon that we can see from Earth gives the phases of the Moon, and the phases repeat every synodic month. Satelliente orbits vary according to their purpose.A survey o that takes photographs of the surface, like the image above has a low earth orbit of around 500 to 1,000 sometres. However this may be elliptical, so for part of the obit the satellite is less than 100 kilometres high, for a closeup view.A telecommunications satellite may orbit 35,800 kilometres high, directly above the Equator. At this distance, each orbit takes 24 hours. The Earth below also spins around once in this time. So from the surface, the satellite seems to “hang” in the same place in the sky. This is a geostationary orbit. It means satellite dishes here on Earth do not have to tilt or swivel to track the satellite across the sky.