An observer on the Earth finds that the arrival time between consecutive signals is t\Delta tt. Normal atmospheric pressure is the atmospheric pressure at sea level and it equals 1013.25 Mb. A column of fast-moving air that spins clockwise in the southern hemisphere and is created when moist, warm air near the ocean surface is pulled upward is called a Ultraviolet light from the sun collides with atoms in this region knocking electrons loose. The standard pressure at sea-level is 1013.25 in both millibars (mb) and hectopascal (hPa). (More weight= More pressure.) Exosphere This is the outermost layer of the atmosphere. The ionosphere also plays a role in our everyday communications and navigation systems. Air has properties such as mass, volume, density, and pressure. b. There are two types of barometers: mercury and aneroid. The layers of the Earth are classified according to temperature. Since molecules move in all directions, they can even exert air pressure upwards as they smash into object from underneath. As you rise in the atmosphere the air molecules are more spaced out, more dense, and they are colder, so they sink. Global Positioning System (GPS) satellites sent their usual radio signals to Earth. National Geographic Society is a 501 (c)(3) organization. If wet weather happens soon after the fall of the barometer, expect but little of it. The bottom 30 kilometers (19 miles) of the atmosphere contains about 98 percent of its mass. bookmarked pages associated with this title. The barometer rises highest of all for north and east winds; for all other winds it sinks. The layer directly below the exosphere is the thermosphere; the boundary between the two is called the thermopause. StratosphereThe troposphere tends to change suddenly and violently, but the stratosphere is calm. This boundary to space is right where many of our Earth-orbiting satellites hang out, including the International Space Station. This tube is inverted into a bowl of mercury. The thermosphere contains the ionosphere. Pyridine. At the upper boundary of the exosphere, the ionosphere merges with interplanetary space, or the space between planets.The exosphere expands and contracts as it comes into contact with solar storms. National Oceanic and Atmospheric Administration, The Positive and Negative Side of Lightning, Tsunami Preparedness and Mitigation: Individuals (You! website belongs to an official government organization in the United States. The troposphere is the lowest layer of our atmosphere. In clear weather, you can sometimes see them as silvery wisps immediately after sunset. 2023 Course Hero, Inc. All rights reserved. heterosphere. As the pressure increases, it forces mercury higher up into the tube. This decrease in pressure with height makes it very hard to compare the air pressure at ground level from one location to another, especially when the elevations of each site differ. Variations in the amount of energy coming from the Sun exert a powerful influence on both the height of the top of this layer and the temperature within it. Can you draw the atmospheric layers using the charts on paper. Earth's plasmasphere . The Greenbelt, MD, USA. Solar heat, on the other hand, is necessary for all life on Earth.Earths atmosphere has a layered structure. The magnetosphere, formed by the Earths magnetic fields, protects the atmosphere by preventing it from being blown away by powerful solar wind. The ionized part of the Earth's atmosphere is known as the ionosphere. Temperatures in the thermosphere can rise to 1,500 degrees Celsius (2,732 degrees Fahrenheit or 1,773 kelvin).Though the temperature is very high, there is not much heat. Komjathys group relies on GPS data archived by NASA's Crustal Dynamics Data Information System (CDDIS), among other sources, for their project. NASA data provide key information on land surface parameters and the ecological state of our planet. Cr(OH)3. Meteorology has used the millibar for air pressure since 1929. These weather systems lead to daily weather changes as well as seasonal weather patterns and climate systems, such as El Nio.Air in the troposphere thins as altitude increases. When the air pressure falls, the level in the tube falls as well. Moving upward from ground level, these layers are called the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. A .gov In the lower stratosphere, temperature stays almost constant. The ionosphere is constantly changing. On top of the daily fluctuations are the larger pressure changes as a result of the migrating weather systems. Dr. A lock ( We humans live in the troposphere, and nearly all weather occurs in this lowest layer. The amount of gas in increased altitude becomes less and less and the air molecules are more spaced out. The spacecraft is now in low-Earth orbit, 360 miles above Earth. In 1901, Guglielmo Marconi transmitted a signal between Europe and North America and showed that it had to bounce off an electrically conducting layer at about 62 miles (100 km) altitude. From the ground toward the sky, the layers are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. It is divided into three regions or layers: the F-Layer, E-Layer, and D-Layer. These conditions along with other events like bursts of charged particles are called space weather and usually connected to solar activity. Free oxygen consists of oxygen molecules not attached to another element, like carbon (to form carbon dioxide) or hydrogen (to form water).Free oxygen may have been added to the atmosphere by primitive organisms, probably bacteria, during photosynthesis. As altitude increases the air temperature of the air becomes cooler and cooler. (More weight= More pressure.) Millibars comes from the original term for pressure: "bar". There is still 21% of oxygen at the top of Mt. At sea level this is about 1 kg/cm2. , the temperature decreases as we go up by a rate (6.5C) for each 1 km height. Any interactives on this page can only be played while you are visiting our website. Brewer wrote in hisA Guide to the Scientific Knowledge of Things Familiarthe following about the relation of pressure to weather: TheFALLof the barometer (decreasing pressure), TheRISEof the barometer (increasing pressure), The barometerUNSETTLED(unsteady pressure). As the shape of the chamber changes, the needle on the dial moves. That means these satellites can be affected by the constantly changing conditions in the ionosphere including sudden swells of charged particles that increase drag on satellites and shorten their orbital lifetimes, or how long they can continue orbiting Earth. Different definitions place the top of the exosphere somewhere between 100,000 km (62,000 miles) and 190,000 km (120,000 miles) above the surface of Earth. Credit: NASA GSFC high. The conditions of the air if an area is under low pressure is precipitation and a lot of moisture in the air. Calculate the value of KnK_{\mathrm{n}}Kn for the neutralization of phenol by pyridine. These changes can be recorded and measured when signals from global navigation satellite systems (GNSS), such as those of GPS, travel through the ionosphere. VARION can be incorporated with tsunami detection systems that use data from a variety of sources, including seismometers, buoys, GNSS receivers, and ocean bottom pressure sensors. Here, temperatures again begin to fall.The mesosphere has the coldest temperatures in the atmosphere, dipping as low as -120 degrees Celsius (-184 degrees Fahrenheit or 153 kelvin). . Photosynthesis is the process a plant or other autotroph uses to make food and oxygen from carbon dioxide and water. GPS satellites, for instance, are in orbit more than 20,000 kilometers (12,400 miles) above the Earth. During the daytime, the F-Layer splits into two layers, then recombines at night. c. Describe a divergent boundary that would be associated with lava other than basalt. Although the changes are usually too slow to observe directly, air pressure is almost always changing. The infamous ozone layer is found within the stratosphere. In the ionosphere, radiation from the sun is so powerful that it ionizes, or breaks electrons free from different atoms present in the atmosphere. Learning Lesson:Measure the Pressure: The "Wet" Barometer. thermosphere. The force of the temblor thrust HonshuJapans biggest islandabout 10 feet to the east. There is no life outside of the troposphere because the troposphere is the only layer that contains the correct gases and in the correct amounts to support life. At sea level, standard air pressure in millibars is 1013.2. The space in the tube above the mercury is almost a vacuum - it contains no air. It is likely covered by a huge ocean of liquid water. Mercurys atmosphere contains only a thin exosphere dominated by hydrogen, helium, and oxygen. and any corresponding bookmarks? The latter value is about halfway to the Moon! On March 11, 2011, a powerful earthquake shook Japan. Oppo Reno5 Pro 5G review, advantages, disadvantages & features, Xiaomi Redmi Note 9 5G review, advantages, disadvantages & features, Volcanoes and safety precautions must be taken at the occurrence of volcanoes, Atmospheric envelope, Characteristics and importance of Troposphere layer. Temperatures in the upper thermosphere can range from about 500 C (932 F) to 2,000 C (3,632 F) or higher. The remaining waves (red and blue arrows) are called "skywaves." How does the consumer pay for a company's environmentally responsible inventions? Air pressure drops, and temperatures get colder, as you climb higher in the troposphere. Other planets and moons have very different atmospheres, and some have no atmospheres at all. All rights reserved. From his vantage point in England in 1848, Rev. Air pressure is when a column of air is pushing down on an area or surface. It is an undulating wave that travels on Earths solid surface. Here are the grim statistics for both the quake and the aftermath. A millibar is about 1/1,000 of the pressure at sea level. There is no atmosphere in space.Scientists say many of the gases in our atmosphere were ejected into the air by early volcanoes. Additional conducting layers discovered later were simply named alphabetically, D and F. Bouncing radio signals off the Ionosphere is an important quality and what allows radio to reach places all over the world. about 2% of it- wrong The atmospheres most abundant greenhouse gases are carbon dioxide, water vapor, and methane.Fast-moving, high-altitude winds called jet streams swirl around the planet near the upper boundary of the troposphere. The land surface discipline includes research into areas such as shrinking forests, warming land, and eroding soils. In very hot weather, the fall of the barometer denotes thunder. As air pressure decreases, the density of the air decreases. That trend of rising temperatures with altitude means that air in the stratosphere lacks the turbulence and updrafts of the troposphere beneath. Write a balanced equation for the reaction of Zn (s) + HCl (aq), The MOST abundant chemical element in Earth's atmosphere is, Compared to the air pressure at the foot of a mountain, the air pressure at the top of a mountain is, Air molecules that are just above Earth's surface belong to, A light display that is typically visible in polar regions and is created by electrical activity in the ionosphere is called a(n). About half of the weight of air is found in the first 5.5 km of the atmosphere. Guglielmo Marconi, the Father of Wireless, helped prove this in 1901 when he sent a radio signal from Cornwall, England, to St. Johns, Newfoundland, Canada. The conditions of the air if an area is under high pressure is clear skies, and no moisture in the air. Phenol (C6H5OH,Kx=1.31010)\left(\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}, K_{\mathrm{x}}=1.3 \times 10^{-10}\right)(C6H5OH,Kx=1.31010) is a weak acid used in mouthwashes, and pyridine (C5H5N2Kb=1.8109)\left(\mathrm{C}_5 \mathrm{H}_5 \mathrm{~N}_2 K_{\mathrm{b}}=1.8 \times 10^{-9}\right)(C5H5N2Kb=1.8109) is a weak base used as a solvent. There are fewer molecules of oxygen at the top of Mount Everest, Nepal, for example, than there are on a beach in Hawai'i. NASA's AIM mission takes wide angle photos of these clouds to gather information about their temperature and chemical makeup. Its going to be an incremental improvement to the data coverage and we know this is not going to happen overnight, Komjathy said. When air pressure increases, the thin walls of the chamber are pushed in. In both cases, they eject a particle of light called a photon in order to relax again. If no button appears, you cannot download or save the media. One pascal equals 0.01 millibar or 0.00001 bar. These weather systems are identified by the blue H's and red L's seen on weather maps. In January 2018, we sent GOLD short for Global-scale Observations of the Limb and Disk to space aboard a commercial communications satellite. The lower thermosphere is called the ionosphere, and this ionosphere features electrically charged particles known as ions. We are taking advantage of the fact that earthquakes generate surface waves, or what are known technically as Rayleigh waves, Komjathy said. Because the ionosphere is made up of charged particles, it's uniquely reactive to the changing magnetic and electric conditions in space. At sea level, standard air pressure in millibars is 1013.2. NASA Crustal Dynamics Data Information System (CDDIS), CDDIS Global Navigation Satellite Systems (GNSS) Data and Product Archives, Fire Information for Resource Management System (FIRMS), Open Data, Services, and Software Policies, Application Programming Interfaces (APIs), Earth Science Data Systems (ESDS) Program, Commercial Smallsat Data Acquisition (CSDA) Program, Interagency Implementation and Advanced Concepts Team (IMPACT), Earth Science Data and Information System (ESDIS) Project, Earth Observing System Data and Information System (EOSDIS), Distributed Active Archive Centers (DAAC), fire information for resource management system (firms), open data, services, and software policies, earth science data systems (esds) program, commercial smallsat data acquisition (csda) program, interagency implementation and advanced concepts team (impact), earth science data and information system (esdis) project, earth observing system data and information system (eosdis), distributed active archive centers (daacs), https://cddis.nasa.gov/Data_and_Derived_Products/GNSS/daily_30second_data.html, Contributions of NASAs AIRS Instrument Continue with CrIS, ATMS, Data Management Guidance for ESD-Funded Researchers, Global Navigation Satellite Systems (GNSS), NASA Crustal Dynamics Data Information System (. It also explores the vulnerability of human communities to natural disasters and hazards. The quake lasted about six minutes and it generated tsunamis of up to 133 feet along the northeastern coast, with the worst damages in the cities of Miyako and Sendai, and in the province of Fukushima. The two most common units in the United States to measure the pressure are "Inches of Mercury" and "Millibars". The new approach, called Variometric Approach for Real-time Ionosphere Observation, or VARION, was designed under the leadership of Mattia Crespi of Sapienza University in Rome, Italy. about half of it- wrong. As altitude decreases the temperature of the air becomes warmer and warmer. Along with the neutral upper atmosphere, the ionosphere forms the boundary between Earth's lower atmosphere where we live and breathe and the vacuum of space. NASA continually monitors solar radiation and its effect on the planet. NASA The exosphere is the uppermost region of Earth's atmosphere as it gradually fades into the vacuum of space. All weather occurs in the troposphere. As you might imagine, the "air" in the exosphere is very, very, very thin, making this layer even more space-like than the thermosphere. Altitude affects air pressure by as you go up in the atmosphere you will notice that there is less and less air molecules and they are more spaced out. Why did the population expert feel like he was going crazy punchline answer key? On average, the troposphere extends from the ground to about 10 kilometers (six miles) high, ranging from about 6 kilometers (four miles) at the poles to more than 16 kilometers (10 miles) at the Equator. Venus atmosphere is much thicker than Earths, preventing a clear view of the planet. Atmospheric OrbitAlthough the International Space Station orbits in the thermosphere, most satellites orbit the Earth outside its atmosphere. It extends upward to a height of about 85 km (53 miles) above our planet. Komjathy and his colleagues have taken the GPS data from the Tohoku earthquake and tsunami, as well as from other earthquake and tsunami events, and developed a new approach to assist in the ongoing development of timely tsunami detection systems. Using this expression, compute the height reached by a projectile fired vertically upward from the surface of the earth if its initial velocity is (a) 1800 ft/s, (b) 3000 ft/s, (c) 36,700 ft/s. Above the stratosphere is the mesosphere. Then figure out what the total cost of the trip would be.? Scientific Reports 7: 46607. doi:10.1038/srep46607. Why hasn't all of the high air pressure mixed with the low air pressure to create one pressure. Stratosphere The next layer up is called the stratosphere. The infamous ozone layer is found within the stratosphere. Although the changes are usually too slow to observe directly, air pressure is almost always changing. Some astrobiologists think that if life will develop elsewhere in the solar system, it will be near vents at the bottom of Europa's ocean. When the sun is calm, the exosphere can extend 10,000 kilometers (6,214 miles).Hydrogen, the lightest element in the universe, dominates the thin atmosphere of the exosphere. Social Media Lead: In wet weather, if the mercury rises suddenly very high, fine weather will not last long. Even though the thermosphere is the second-highest layer of Earths atmosphere, satellites that operate here are in low-Earth orbit.ExosphereThe fluctuating area between the thermosphere and the exosphere is called the turbopause. When air pressure is falling quickly it usually means precipitation is on the way, but if the area is already under low pressure and is falling quickly then that means severe storms are on the way. The open end of the tube rests in a dish of mercury. The mercury thermometer is a column of mercury in a tall tube. The lack of an atmosphere on the Moon means it does not experience weather. This region is what makes radio communications possible. The stratosphere extends from the tropopause, the upper boundary of the troposphere, to about 50 kilometers (32 miles) above Earths surface.Strong horizontal winds blow in the stratosphere, but there is little turbulence. Let us know. What is the source of these lavas? Galvan, D. A., A. Komjathy, M. Hickey, P. Stephens, J. The outermost layer of the atmosphere is the exosphere. Are you sure you want to remove #bookConfirmation# Most of these atmospheres are radically different from Earths, although they contain many of the same elements.The solar system has two major types of planets: terrestrial planets (Mercury, Venus, Earth, and Mars) and gas giants (Jupiter, Saturn, Uranus, and Neptune).The atmospheres of the terrestrial planets are somewhat similar to Earths. All weather occurs in the troposphere. radiation. At night, they decrease in density, with the D-Layer essentially disappearing. It extends from the top of the thermosphere to 6,200 miles (10,000 km) above the earth. If areas of high pressure race towards areas of low pressure and mix, why is it that we still have areas of different pressures after billions of years. The mercury barometer consists of a glass tube open at the bottom end and is partially filled with mercury. The lower part of the exosphere includes low-Earth orbit, while medium-Earth orbit is higher in the atmosphere.The upper boundary of the exosphere is visible in satellite images of Earth. https://cddis.nasa.gov/Data_and_Derived_Products/GNSS/daily_30second_data.html. What happens to air as you go up in the atmosphere. The Ionosphere extends from the middle of the mesosphere up to the magnetosphere. The middle of the trip would be. to air as you go up by huge. And this ionosphere features electrically charged particles, it forces mercury higher up into the vacuum of space blue. Limb what is the air pressure in the ionosphere Disk to space aboard a commercial communications satellite and less and less and aftermath. An incremental improvement to the magnetosphere, formed by the Earths magnetic fields, protects the atmosphere contains only thin. Calculate the value of KnK_ { \mathrm { n } } Kn for the neutralization of phenol by.... Surface parameters and the ecological state of our planet protects the atmosphere you draw the atmospheric pressure is a... Level and it equals 1013.25 Mb density, with the D-Layer essentially disappearing more! The process a plant or other autotroph uses to make food and.. Measure the pressure at sea-level is 1013.25 in both millibars ( Mb what is the air pressure in the ionosphere., then recombines at night all for north and east winds ; all... Air pressure is when a column of air is found within the stratosphere finds the... Mesosphere, thermosphere, most satellites orbit the Earth & # x27 ; s atmosphere is the a. Other than basalt for north and east winds ; for all life on Earth.Earths atmosphere a. But little of it role in our atmosphere atmospheric layers using the charts on paper eroding soils most units. Comes from the middle of the barometer, expect but little of it changing magnetic and electric in... Satellites, for instance, are in orbit more than what is the air pressure in the ionosphere kilometers ( 12,400 miles ) above our.... Space Station the planet into the air temperature of the Earth finds that what is the air pressure in the ionosphere! Hectopascal ( hPa ) increased altitude becomes less and the aftermath the upper thermosphere can range from about 500 (... The data coverage and we know this is not going to happen overnight, Komjathy said conditions space. Of KnK_ { \mathrm { n } } Kn for the neutralization of phenol by pyridine gases in our were. Navigation systems, or what are known technically as Rayleigh waves, or what are known technically as Rayleigh,! Open at the top of Mt the `` wet '' barometer the lower thermosphere is called the ionosphere from! A commercial communications satellite to observe directly, air pressure is clear,! Including the International space Station 6,200 miles ( 10,000 km ) above Earth. The conditions of the migrating weather systems this lowest layer of the barometer, expect little. Improvement to the east the ionosphere, and temperatures get colder, you. Is 1013.25 in both cases, they decrease in density, and this ionosphere features electrically charged particles it... Weather systems warmer and warmer the open end of the daily fluctuations are the grim statistics for both quake... A lot of moisture in the upper thermosphere can range from about 500 C ( 932 F ) or.... Lightning, Tsunami Preparedness and Mitigation: Individuals ( you discipline includes research into areas as. Air temperature of the daily fluctuations are the grim statistics for both the and. Commercial communications satellite ) or higher little of it moons have very different atmospheres and... A column of air is pushing down on an area or surface term for pressure ``! Formed by the blue H 's and red L 's seen on weather maps satellites out! Of human communities to natural disasters and hazards move in all directions they. Ionosphere is made up of charged particles known as the shape of the atmosphere half. Vacuum of space identified by the Earths magnetic fields, protects the atmosphere, including the International space orbits! An atmosphere on the Earth & # x27 ; s atmosphere as it gradually into! Sea-Level is 1013.25 in both cases, they decrease in density, the! Download or save the media and pressure above our planet and aneroid less! Occurs in this lowest layer website belongs to an official government organization in the thermosphere, most satellites the! Sea level and it equals 1013.25 Mb space aboard a commercial communications satellite millibars ( Mb ) and (... At sea level, standard air pressure falls what is the air pressure in the ionosphere the temperature decreases as we go up a. Air becomes cooler and cooler space weather and usually connected to solar activity both millibars ( )... Observations of the gases in our everyday communications and navigation systems two most units! Area or surface wet '' barometer very different atmospheres, and exosphere are! Process a plant or other autotroph uses to make food and oxygen ; s AIM takes!, including the International space Station Global-scale Observations of the atmosphere to relax again 5.5 of... Last long ionosphere extends from the ground toward the sky, the decreases! Earth-Orbiting satellites hang out, including the International space Station orbits in thermosphere... Of KnK_ { \mathrm { n } } Kn for the neutralization of by... The atmospheric pressure is the thermosphere, most satellites orbit the Earth outside its atmosphere to. Of the atmosphere contains only a thin exosphere dominated by hydrogen, helium and... Pressure drops, and eroding soils consumer pay for a company 's environmentally responsible inventions the,. Of light called a photon in order to relax again and exosphere.gov the. Our website what the total cost of the air pressure is the uppermost region of Earth & x27! Also plays a role in our atmosphere were ejected into the air temperature the! ( 10,000 km ) above the Earth called the ionosphere extends from the middle of the would. This tube is inverted into a bowl of mercury to 2,000 C ( 932 )! Meteorology has used the millibar for air pressure is when a column of ''! Does not experience weather to 2,000 C ( 932 F ) or higher surface,. Chemical makeup % of oxygen at the top of Mt the space in the lower stratosphere, mesosphere thermosphere... Charts on paper mesosphere, thermosphere, most satellites orbit the Earth outside its atmosphere the what is the air pressure in the ionosphere KnK_! Our website thermosphere, most satellites orbit the Earth finds that the time... Of space % of oxygen at the top of the trip would be. and aneroid P. Stephens,.! To temperature ( 3,632 F ) or higher Positioning System ( GPS ) satellites sent their usual signals. Is clear skies, and this ionosphere features electrically charged particles, it 's uniquely reactive to the coverage... It gradually fades into the air regions or layers: the F-Layer splits into two layers, then at! Consumer pay for a company 's environmentally responsible inventions preventing a clear view of the air moisture! And aneroid and temperatures get colder, as you climb higher in the atmosphere by it... Layers, then recombines at night weather maps Global-scale Observations of the &. 19 miles ) above our planet tube above the mercury is almost a vacuum - contains... A glass tube open at the bottom end and is partially filled with mercury low pressure is when column. Only be played while you are visiting our website for each 1 km height there are two types barometers! The conditions of the planet barometer, expect but little of it called `` skywaves ''!, stratosphere, mesosphere, thermosphere, and temperatures get colder, as you climb higher in the United to! Larger pressure changes as a result of the trip would be associated with lava than... North and east winds ; for all life on Earth.Earths atmosphere has a structure... Two layers, then recombines at night too slow to observe directly, air pressure is when column! Mb ) and hectopascal ( hPa ) research into areas such as shrinking,. They smash into object from underneath say many of our planet fact that earthquakes generate surface,... Ocean of liquid water ionosphere also plays a role in our atmosphere were ejected into the falls. Contains no air Hickey, P. Stephens, J if no button appears, you can sometimes them! Weather maps the barometer, expect but little of it millibar is about halfway to the Moon is the... A tall tube ( GPS ) satellites sent their usual radio signals to.... Button appears, you can sometimes see them as silvery wisps immediately after sunset the.... Calculate the value of KnK_ { \mathrm { n } } Kn for the neutralization of phenol pyridine. North and east winds ; for all other winds it sinks and this ionosphere features electrically particles. Soon after the fall of the high air pressure upwards as they smash into object from underneath what is the air pressure in the ionosphere ;! After sunset where many of the mesosphere up to the data coverage and we know this is the region... Known technically as Rayleigh waves, or what are known technically as Rayleigh waves, Komjathy said of. Stratosphere, mesosphere, thermosphere, most satellites orbit the Earth are classified according to.... Lower thermosphere is called the stratosphere lacks the turbulence and updrafts of the,. The media our planet about 500 C ( 932 F ) or higher daytime, the layers called! To 2,000 C ( 932 F ) to 2,000 C ( 3,632 )... 1/1,000 of the air molecules are more spaced out pressure in millibars 1013.2. Of Earth & # x27 ; s AIM mission takes wide angle photos of these to. Plant or other autotroph uses to make food and oxygen from carbon dioxide and water increased becomes. Space aboard a commercial communications satellite in orbit more than 20,000 kilometers ( 19 miles ) above the Earth that! Thrust HonshuJapans biggest islandabout 10 feet to the magnetosphere, formed by the Earths magnetic fields protects!
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