Introduction
What is Satellite?
Satellite is the moon, planets or a planet orbiting machine or stars. For example, the Earth is the satellite as it orbits around the sun. So the moon, the moon is a satellite as it circles the earth. Usually, the word "satellite" refers to a machine that was launched into space, and move around the earth or other planets in space.
Earth and moon are examples of natural satellites. Thousands of artificial or man-made satellites orbit the earth. Some take pictures of the planet to help meteorologists predict the weather and track hurricanes. Some take pictures of other planets, the sun, black holes or faraway galaxies. These images help scientists better understand the solar system and the universe.
Beside satellites, also can be used primarily for communication, such as TV and telephone signals to around the world. More than 20 satellite groups forming the Global Positioning System, or GPS. If you have a GPS, satellites can help figure out your location.
Why are Satellites Important?
Satellite with extensive scenery allows them to see areas of the earth at a time. This capability means that satellites can collect more data, faster than the instruments on the ground.
Satellite can also see into the space better than telescopes on Earth's surface. Because satellites are fly above the clouds, dust and molecules in the atmosphere that can obstruct the view from the ground.
Before pre- built satellite, TV signals cannot go far. TV signals only in a straight line. So they immediately follow into space instead of following the curve of the earth. Sometimes the mountains or tall buildings will block them. Phone calls to places far too problematic. Establish telephone wires over long distances or in the wate...
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...ellite towards the earth and find information about clouds, oceans, land and ice. They also measure gases in the atmosphere, such as ozone and carbon dioxide, and the amount of energy the Earth absorbs and emits. And satellite monitoring of forest fires, volcanoes and their smoke.
All information in help scientists predicts weather and climate on Earth. This information also helps public health officials to detect all disease and famine: it helps the farmers know what crops to plant and it helps emergency workers respond to natural disasters.
Overlooking satellite into space has different jobs. Some watch for harmful radiation coming from the sun. Explore asteroids and comets, the history of the origins of stars and other planets. Number of satellites orbiting near or fly to another planet. Spacecraft may find evidence of water on Mars or capture near Saturn’s ring.
moon orbiting Pluto. I guess the message that has been given to the public had a key role on the broader view of
The Soviets took a lead by launching the first successful satellite into space. On October 4, 1957 the Soviets launched the first successful satellite into orbit. It was called Sputnik I and it successfully entered Earth’s orbit. This first success started the Space Age. The Soviets successful launch shocked the whole world, giving the Soviet Union the respect for putting the first man-made object into outer space. The Americans successfully launched their first satellite four months after Sputnik I, called the Explorer I. The US would have had the first satellite in orbit if they were allowed to use military rockets from the beginning. But, Eisenhower was worried he would be called a warmonger if he used military rockets for launching a satellite into orbit. He told the sci...
...d close-range reflection where space probes fly within close ranges of the asteroids and collect detailed data.
The space race began with the launch of Sputnik 1 on October 4, 1957 as Roy Silver and other reporters announced the next day reported that "Radio signals from the first satellite launched yesterday by the Russians were broadcast to radio and television audiences here last night."The competition was to be the first to loft a satellite into space and had begun way before Sputnik launched. After the end of World War II, research on rockets for upper-atmosphere research and military missiles was extensive. Engineers knew they would be able to launch a satellite to orbit Earth sooner or later. The first United States proposal to place a satellite in orbit was made in 1954 by the U.S. Army. It was not until January 31, 1958, that the United States joined the Soviets in space. The Space Age began for the world's superpowers when the Soviets put Sputnik I, the first man made satellite, into a shallow Earth orbit. Sputnik carried a battery-operator radio transmitter that beeped as it circled the globe every 95 minutes. The 185-pound Sputnik became a symbol of Soviet success, for the first time...
What is astronomy? Astronomy consist of a lot of things that make up our solar system such as: the nine planets, asteroids, meteorites, the moon and the sun. Astronomy is also a fascinating hobby that can be followed by anyone. You do not need to be, as some people seem to imagine, ‘mathematically-minded’ , in order to start, or even to become a very experienced observer. Yet astronomy is one of the few hobbies where not only can you gain great enjoyment, but if you feel want to can very easily make observations of great scientific value.
Centuries ago, people gazed into the night sky wondering what it was that they were looking at. When astronomers first started to study the night sky, like Galileo, Copernicus and even modern day astronomers, they all shared one goal, and that was to see further than anyone has ever before. The invention of the Hubble Space Telescope changed the study of astronomy forever. Astronomers were seeing and learning more in just days of the launch of the telescope than past astronomers had in their lifetimes. The Hubble Space Telescope is the most technologically advanced telescope to enter space. Its advanced technology has made it possible to obtain countless amounts of data about space and open many doors in the exploration of space. Its accuracy has and still is proving/debunking the myths of space.
When considering this topic, one might ask themselves why explore space? We explore space to compare other planets with the earth and to study the sun, to explore the universe while finding if intelligent life exists, for satellites to improve communications, weather forecasting, navigation, resource monitoring, and “to create a focal point for a new intellectual renaissance” (Ruzic).
In the past years, many space probes have been launched for many different reasons. They have visited all of the planets in our solar system besides Pluto. The earliest space probes to be launched in the United States were the Mariner Series. They investigated Mercury, Venus, and Mars. The Mariner II flew within 35,400 km of the surface of Venus. (1) It sent information back to Earth about Venus’s atmosphere, rotation period, and information on its magnetic field. Mariner 10 has been the only space probe to reach Mercury so far. Another space probe, Helios I came within
According to A. Rossi (2011), since October 4, 1957, when the first satellite Sputnik-1 was launched by USSR, there have been more than 5000 launches with nearly 7000 payloads placed in orbit. Most of these spacecraft eventually reentered Earth’s atmosphere. Currently there are about 3500 satellites and probes orbiting the Earth together with about 1800 upper stages, i.e. parts of the rockets used to bring them to space. Of all these spacecraft only about 900 are operational and all of the rest are space debris. This population of satellites and rocket bodies’ account for about 99% of the debris orbiting the Earth are estimated to be around 5000 metric tons.
...roups that have been important to astronomy are the Akkadians, Egyptians, Chinese, Polynesians, and the Greeks. They used astronomy for navigation at sea, creating accurate calendars, making new inventions, and many more things! Some modern jobs in astronomy include Educational, Private industries, National Observatories and Laboratories. Also, some technical advances because of astronomy include many telescopes, tracking programs used by FedEx, and IRAF which is used to analyze computer systems. Even though astronomy is an incredibly interesting field, there are minimum job opportunities. Some of the jobs are included in the following fields: education, national observatories and laboratories, or in private industries. Astronomy has been the key to unlocking many new inventions and by connecting things from the past, to the present, and going into the future.
Satellites were a very important part of the Space Race and are still very important today. There are different functions for each satellite. Some are for television networks while others can save lives and predict the weather. Satellites are used every day to help with navigation and positioning systems. Over two thousand five hundred satellites have been sent into space and around one thousand are still operational.
Today, professional astronomers play a very different role than hundreds of years ago. Surprisingly, astronomers today spend minimal time at the telescope gazing at the night sky. Operating planetariums, teaching astronomy classes, or operating and maintaining an observatory are some of the things astronomers today do.
Today, modern day astronomers have a different job than astronomers back in the ole’ days. Modern day astronomers do more than just look at stars. They have to observe objects without touching them or even being near them. The objects are most likely thousands or even hundreds of thousands of miles away. They observe through a high-powered telescope and camera which allows them to see what the naked eye can’t see. The astronomers record what they see and what they predict. Astronomers must be strong in math subjects and science. Astronomers will have to use their math and science knowledge to create programs and logical and “what-could happen” scenarios. They gather data, findings, and create theories in which they will present to other scientists in their field in meetings. Astronomers will also have to be able to work with a team. If they didn’t work with a team, they wouldn’t really figure anything out by themselves. Astronomers mostly work at night (as if that isn’t obvious).
The Global Positioning System consists of three sections, 1.satellites which are orbiting the planet, 2.there are numerous control/monitoring centers here on the ground, and 3. gps receivers which are used by their owners. The satellites send down signals from orbit, which are received by GPS receivers on the ground in the air or on the water, the GPS receiver then converts this information into a location longitude, latitude and altitude along with time.
We have benefitted our world by using satellite technology to preform tasks and provide a range of innovated services. The main applications of satellites are in the fields of communication, Earth Remote Sensing, weather, and scientific research. In some ways the use of satellites has made our world smaller. Satellites make it possible to establish a connection between two people that are on opposite ends of the globe via a telephone call or the use of the internet. Each of these satellites have many parts, but two parts are common to all satellites are called the payload and the bus. These groups of devices make the satellite capable of accomplishing their tasks.