Artificial Satellites

No.

Sputnik was the "family name" for a series of satellites, and none of them dropped bombs on Earth. Not out of restraint, but because they didn't have any to drop.

But the fear was that once someone had the technology to put things into orbit, then it'd be a small step to actually drop things from orbit as well.

yes All planets have some sort of atmosphere Earth has the right combination of nitrogen and oxygen making it ideal for carbon based lifeforms, so if you mean breathable air to us than the answer is yes

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.

The earth is pulled by the satellite, but because the gravitational force of the satellite is so small and the Earth is so big the effect is negligable.

I think it was a dog

The Global Earthquake Satellite System (GESS) uses technology called interferometric synthetic aperture radar (InSAR) that allows scientists to detect even the smallest deformations in the Earth's crust.

You can not launch a satellite "in" earth or indeed "into" the Earth. To launch a satellite you need a rocket.

The unique thing concerning the Sputnik 2 (compared to previous Sputnik 1 satellite) was the fact it carried the first living being into other space - a dog named Laika. "Laika" translates to English as "Barker".

Drag with the high atmosphere slowed it and it reentered on March 23, 2001 resulting in its breakup and destruction. To make sure this happened in a controlled manner safely over unpopulated areas a number of burns of the engines of the Progress M1-5 that had docked earlier adjusted the orbit so that reentry would be over the southern Pacific ocean.

Free Space Loss is the primary source of signal loss in satellites. As the signal propagates through the atmosphere it disperses. With normal terrestrial antennas, the distance is so short that this is rarely an issue. However, the great distances that satellites must communicate over make this a major problem for global space-based communication.

An earth terminal transmits data up to the satellite. The satellite can then either shoot it right back down in its footprint to another earth station where the data was meant to go. It can relay it directly to any amount of other satellites and then down to the other earth terminal you were wanting to talk to. Or it can go up to the satellite, back down to another terminal, up to another satellite, and then down to where you wanted to "talk" to.

Although the launch of Sputnik lead to the humiliation of America's scientific community and the public as a whole, it was more benificial to the United States than a negative effect. For one, there was the establishment of the Advanced Research Projects Agency in 1958 (which will become DARPA later on). There was the establishment of NASA in 1958, and thus space research was now in civilian hands rather than military. You had the National Defense Education Act of 1958, which increased the funds towards the education in the fields of science, math, and engineering by an insurmountable amount, as well as creating low-finance student loans. And finally you had the Apallo missions, which would not be possible without the technological determanism America had towards becoming the dominating figure in the fields of science and engineering, as well as beating the Soviet Union in the Space Race.

The polar orbit so that it can measure cold and hot points around the entire earth :)

It has to get up to 7km a second to get out of earth's orbit, then it orbits around earth.

1 - programming source transmits signal to a DBS provider broadcast center (Satellite TV Providers)

2 - these satellite tv providers automatically assigns received signal from the programming source to their respective bands and transmits to the satellite dish.

3 - when a user requests for a band/channel, by using a receiver it will then requests the band from the satellite to a satellite dish connected to the receiver.

The effects of the Russian Sputnik being launched was that it caused a national panic throughout the US public and government. The Russian Sputnik was the first artificial satellite. What this caused throughout America was the greatly increased pace of scientific developments and scientific devices. The effects the Sputnik had upon the Russian public was that it caused a great amount of harassment of the US and a great deal of power now being held by the Russian government and military over the rest of the world including the USA.

Frequency is defined as the number of cycles per minute.

Ex: for a sine wave from " 0 to pi " is a cycle, and this repeats periodically within a interval of time.

if frequency of a signal is 50Hz, then you can say that this signal repeats 50 time's a minute..

1 dam pound

The closer to the equator one builds launch facilities, the lower the thrust required to boost a rocket into orbit.

If you stand in the center of a merry-go-round, you feel much less centripetal force than you feel on the edge, when it is spinning at the same rate.

You don't really have a question here. If the satellite is in orbit, the mass is essentially irrelevant; it wouldn't change the speed of the orbit or the altitude. A larger satellite mass WOULD HAVE required more fuel and more energy to LAUNCH it, but once in orbit, it will stay there.

The only exception would be an exceptionally large, light satellite. There is still some minuscule traces of atmosphere at 200 miles, and a large, light satellite would be slowed by air friction much more than a small dense satellite would. This is what caused the "ECHO" satellite - essentially a silvered mylar balloon inflated in orbit as a primitive reflector comsat - to deorbit.

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Distance is nothing but a clear demarcation of angle which the distant object makes with an eye of the observer.

Satellites appear at different locations in the sky based upon the task that they must perform. Satellites that are in "low" Earth orbit, such as the GPS and some weather sats orbit the earth at only a few hundred miles above the surface. They move in relation to a fixed position on the Earth, though they follow well-defined orbits (hopefully). Satellites in "Geostationary" orbits, such as communication and other weather sats, are approximately 40,000 miles off the surface of the Earth more or less over the equator. Because of the distance and the speed at which they orbit, they appear stationary in the sky to a fixed observer. This is useful for satellites that broadcast continuous streams of data, like satellite television. Finally, there are satellites that are even farther out from the earth. These are used for scientific purposes. An example is SoHo, a satellite that studies the Sun, or COBE, the satellite that mapped out the cosmic background radiation. A new space telescope set to launch in 2011 (ish?) will actually orbit the sun, though will remain locked in a gravitational point in tandem with the Earth (called a Lagrange Point).

The Van Allen Belts are full of dangerous cosmic radiation. Radiation is harmful to humans and has a tendency to destroy electronic gear.

The fullform of APPLE stands for: Ariane Passenger Payload Experiment.