Very few satellites are ever recovered. If a satellite is no longer doing its job, for whatever reason, and it can still be controlled from the ground, then it's orbit will be intentionally changed to one that skims the atmosphere. After that, it doesn't take long before the satellite completely "falls" out of orbit, and burns up in the atmosphere. If a satellite no longer responds to remote command and control, then there's nothing that can be done with it except to track it. It has graduated into the category of "Space Junk", and it'll continue to go where the laws of Physics take it. The only remaining task of any interest is to know where it is at all times, so that future space missions can avoid it.
The cost of sending something into space can vary greatly depending on the size of the payload, the destination, and the method of transportation. On average, it can range from tens of millions to hundreds of millions of dollars for a single mission.
The first method people used to tell time was based on the natural movement of the sun, specifically through the use of sundials. Ancient civilizations observed the position of the sun in the sky, which cast shadows on marked surfaces, indicating the time of day. As technology evolved, water clocks and hourglasses were developed, allowing for more precise time measurement independent of sunlight.
Remote sensing is a method of gathering information without physical contact by analyzing satellite or aerial images. This technology allows for the collection of data on various topics, from the Earth's surface features to weather patterns, and is commonly used in fields such as agriculture, urban planning, and environmental monitoring.
The mass of the Moon can be found from a modified form of Kepler's third law of Planetary Motion. You need to know the time taken for the Moon to orbit the Earth and the mass of the Earth. Also you need the distance between the Moon and Earth. Let the orbital period be P Moon's mass = Mm Earth's mass = ME Distance apart = D Gravitational Constant = G Then: Mm + ME = (4pi2/G) x (D3/P2) Note: That equation doesn't show up properly on some pages. To clarify, it involves: pi squared, D cubed and P squared. Also, an artificial satellite orbiting the Moon can be used to find the Moon's mass by the same method: mass of satellite (negligible) + mass of Moon = (4pi2/G) x (D3/P2) D is now the distance of the satellite from the center of mass of the Moon and P is the orbital period of the satellite.
The post method. ( As opposed to the get method ).
something that is observed and can generally not be measured.
You're probably angling for the answer "Radar" or you could be fishing for the answer "Sonar" instead. To be a little more accurate, the object is not located by "sending out a pulse" of radio energy, but rather by analyzing the energy the object returns after the pusle is reflected off it. We can do the same thing with sound, and we locate things under water by this method. Bats locate insects in the air via sonar.
PGP
internet
The goal of any scientific method is to solve a problem or to better understand an observed event.
dark matter
IMDC uses a compass, radio or satellite to determine their location.
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RTP
The scientific method uses a hypothesis or hypothetical explanation, which is tested to determine its validity.
The most secure and efficient method for sending a check through the mail is to use certified mail with return receipt requested. This method provides proof of mailing and delivery, ensuring that the check reaches its intended recipient safely.