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A satellite in orbit around the Earth does not fall into the Earth because the force of Gravity between the satellite and Earth is exactly balanced by the centripetal reaction force of the satellite constantly changing direction.
Think of driving in a car in a straight line. Now, think about turning right. You will be pulled towards the left. Well, actually, you are going in a straight line and the car is moving to the right. That causes you to drift towards the left. You encounter the door, and now you are going to the right as well. The door is pushing on you towards the right, and you are pushing towards the left against the door. The force pushing you towards the right is sort of like Gravity, while the force you are pushing on the door to the left is your centripetal reaction force. Since you are going in a constant speed circle, these two forces are balanced. Its the same type of thing as a satellite.
What else can I help you with?
Does Venus have any satellites?
No. Venus has no natural satellites (moons). Neither does Mercury.
Who invent the world is round?
The earth is a spherical shape, and they food this out because in the late 20th century, artificial satellites sent back pictures confirming the earths round shape. Much earlier, Aristotle suspected earth was a sphere by observing that earth cast a curves shadow on the moon during an eclipse.
What do GPS satellites do?
GPS satellites orbit the earth, around 20,000Kms above us. They contain very precise atomic clocks which they use to produce a special timing signal which is then broadcast back to earth. Back on earth, we can use our GPS receivers (Like Sat Nav) to pick up the GPS signals, and by using very clever mathematical algorithms in conjunction with the timing signals we receive from the satellites, calculate our position on the surface of the earth.
How active satellite differ from passive explain with an example?
active satellites are receives the transmitted signal from earth ,amplify the signal and transmit it. it is also called as transponders. but passive satellites just receive and transmit the signal.itac as the reflector
Name some artificial satellites which are used for different purpose?
The first man-made satellite was Sputnik, launched into orbit in 1957 by the Soviet Union. The first American satellite was Explorer, launched the following year. The oldest satellite still in orbit is Vanguard, launched in 1958 by the US. There are now thousands of satellites currently in orbit, including communications satellites, GPS satellites, and the International Space Station. if you would like to see a real-time 3-D plot of satellites now in orbit, check out the JTRACK 3D web site from NASA.
What happens to old satellites?
Old satellites orbiting near the Earth eventually fall back into the atmosphere and burn. Satellites orbiting farther away stay in orbit indefinitely.
Does Venus have any satellites?
No. Venus has no natural satellites (moons). Neither does Mercury.
What are examples of solar satellites?
In one sense all the planets are solar satellites, that is, they orbit the sun, just as the moon is Earth's satellite. So Mars, Venus, Earth and all the planets are solar satellites.In another sense a solar satellite could be any of Earth's artificial satellites, because most of them use solar panels to generate the electricity they need to keep sending data back to Earth.
What force acts to pull natural and artificial satellites to earth?
Gravity. A natural satellite aka asteroid, then meteor, then meteorite all get pulled to Earth through gravity. With artificial sattelites it's tge same thing, gravity. The difference is we launch our satellites to the perfect zone around the planet where they become trapped in orbit around us. Sometimes things occur that bump these satellites out of their orbit and gravity takes over, pulling the satellite back to the surface.
What were satellites originally made for?
The first artificial satellite that had a particular purpose (other than just for scientific research) was the Echo satellite; a large mylar balloon placed in orbit to reflect radio signals back to the Earth. Now, satellites are used for all kinds of communications; TV, cell phones, overseas phone calls, internet and such; weather satellites that help to predict the weather and track storms, and reconnaissance satellites that take photos of the Earth. Oh; GPS satellites.
What were Echo 1 and Telstar 1?
Communications satellites, launched in the 1960's. There were 2 Echo satellites, which were passive (the signal would bounce back to earth like a mirror). The Telstar satellites were active, meaning that the signal was retransmitted back to earth.
Who invent the world is round?
The earth is a spherical shape, and they food this out because in the late 20th century, artificial satellites sent back pictures confirming the earths round shape. Much earlier, Aristotle suspected earth was a sphere by observing that earth cast a curves shadow on the moon during an eclipse.
How do satellites get the weather?
Satellites take pictures and accumulate other information into the computer. They analyze the data and send it back to weather stations on earth.
What satellites orbiting earth that receive radiotelevisionand telephone signals and then transmit them around the world?
The satellites that orbit Earth and facilitate the transmission of radio, television, and telephone signals are known as communication satellites. These include geostationary satellites, which remain fixed over a specific point on the Earth's surface, such as the Intelsat and SES satellites. They receive signals from ground stations, amplify them, and then retransmit them back to different locations on Earth, enabling global communication. Examples of specific satellites include the Astra and DirecTV satellites.
What is a instrument that gathers information and sends it back to earth?
A common instrument that gathers information and sends it back to Earth is a satellite. Satellites can collect various types of data, including images, weather information, and scientific measurements, and transmit this data to ground stations for analysis. They are essential for communication, navigation, and Earth observation. Examples include weather satellites and Earth observation satellites like Landsat.
Why don't satellites get pulled towards the Earth's surface?
Satellites remain in orbit around the Earth due to a balance between the gravitational pull of the Earth and the satellite's velocity. The satellite's forward velocity allows it to continue moving tangentially to the Earth's surface, preventing it from being pulled towards the surface. This balance enables satellites to maintain their orbit without falling back to Earth.
How was the satellite invented?
The idea of an artificial satellite goes back at least as far as the prototype science fiction story "The Brick Moon". The idea that actual, real satellites could perform useful work goes back to about 1947, when science fiction author Arthur C. Clarke realized that satellites orbiting the equator at about 22,000 miles out, would appear not to move in the sky. You could aim an antenna at it and leave it. Thus you could make communications satellites that could transmit a signal from anywhere on Earth to anywhere on Earth, just by having 3 satellites spaced around the Earth. The first actual, real satellite was Sputnik, sent up by the Russians in the late Fifties.
