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If a satellite hits any other objects its orbit decays and falls back to the earth. The atmosphere extends (although it does get VERY thin) hundreds of miles above the surface of our planet. The few molecules of gas at satellite orbit altitudes ARE enough to slow a satellite down and cause it to fall to the ground.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoIts due to balance of the inward pull of gravity toward a massive object and the
other object forward momentum which wants to pull it in a straight line as a result
the object is trying to fall in to to more massive object but it never makes it. It
forward motion forces it to go in space instead and the result is orbit. The same
thing happens when you spin a ball on a string in a circle.
Wiki User
∙ 10y agoThey use radio signals with the picture data encoded on them.
Kind of like the same way you post a picture on Facebook, but
over radio.
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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.
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.
Why do all satellites face south?
This allows them to see the entire surface of the Earth. The Earth is rotating East to West. (Or West to East if you were the satellite.) If you placed a satellite into an East-West orbit, it would not see the polar regions. If it were high enough (geo-stationary), it would only see one spot on the Earth. By using North-South (polar) orbits, the satellites will, after several orbits, be able to see the entire surface of the Earth.
Why is it important for satellites to be outside the earths atmosphere?
Satellites need to be out of the earth's atmosphere or the gravity would make them fall to the ground. In space, the satellites are also able to orbit the earth effortlessly because they have less weight.
Can you generate electricity from sun via satellite?
Many satellites have solar panels to generate electricity but it is not so simple to transmit that power back to Earth because the power density used might be harmful to life on Earth at the place where the beam arrives.
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.
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.
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 spacecraft sent many images back to earth?
Landsat.
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 do satellites fall back to Earth?
That will happen if they lose movement energy - usually due to atmospheric drag, if they are not high enough above Earth.
Does Venus have any satellites?
No. Venus has no natural satellites (moons). Neither does Mercury.
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
How did satellites improve?
The satellites are sent into outer space by rockets. They revolve around the Earth. Signals are sent up to the satellites which transmit them back to Earth, covering a much larger area in the process. It is because these satellites that you can see events such as cricket matches being played in England or West Indies live on your television. Telephone and computer signals are also sent to other countries through satellites.
Explain how satellites can be used to collect data on earthquake faults?
Geologists use satellites equipped with radar to make images of faults. The satellite bounces radio waves off the ground. As the waves echo back into space, the satellite records them.
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 does Hubble do as it orbits?
It captures images of space, and then sends them back down to earth via satellite.
