Artificial Satellites

If the speed of a satelite orbiting earth were to decrease, it's orbit would come closer to the earth, and eventually it would fall to the Earth. Space administratioins(like NASA) use calculus and whatever fancy term thay use for their math to try and make it land in a safe place. On the other hand, if it were to increase in speed, it would eventually leave Earth's orbit.

Satellites help map makers because they give a wider perspective. They allow us to see things that we could never see just standing on the ground. They allow us to put more detail into our maps.

You mean Earth observation satellites, and the answer is near-Polar low-Earth orbits.

This means that as the satellite orbits from above one pole to the other, the Earth turns beneath it, and the satellite passes over the Equator, and every other point on its orbit, at a different place on each successive orbit. In this way, after enough orbits, it can view the whole Earth.

Earth observation satellites are placed in low-Earth orbit because (a) they travel faster over the ground at lower altitude and (b) being closer to the ground, their telescopes do not need to be so powerful to achieve a given spatial resolution.

Military observation, or spy, satellites, are often placed in a high parking orbit until they are needed, whereupon they are placed into a highly elliptical orbit to allow them to come very close to Earth (and hence see it with great detail) over the region of interest.

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.

Currently there are only two planets with satellites orbiting them, Mars (a few of them) and Saturn (Cassini). All the planets excluding Uranus and Neptune have had satellites orbiting them at some point. We do also have two satellites orbiting minor objects and they are orbiting Comet 67-P (Rosetta) and the dwarf planet Ceres (Dawn).

Anything in orbit could be considered a satellite. There is one natural satellite - the moon. There are hundreds of navigation, communications, weather, science/experimental and military/intelligence satellites in orbit. There are thousands of bits of "space junk" orbiting the earth at present.

After the launches by the USSR of Sputnik 1 (October 4, 1957) and Sputnik 2 (November 3, 1957), the US finally succeeded with Explorer 1 on January 31, 1958.

Sputnik 1 had already fallen from orbit, and Sputnik 2 did so as well in April, 1958, following the March launch of Vanguard 1, the second US satellite and the oldest satellite still orbiting the Earth.

Yes, a satellite orbiting a planet, such as Earth, is in an inertial reference frame.

This is puzzling because the satellite is not moving in a straight line. Doesn't that mean it is accelerated to curve its path circling the Earth? The only reliable way of determining whether or not you are in an inertial frame is by detection of a force that prevents you from floating freely in your space ship. If you are floating freely, as you would in the orbiting International Space Station (a big satellite), then you are in an inertial frame. If you are able to sit or stand unrestrained in your space ship then the ship is undergoing some sort of an acceleration. This really has nothing to do with your trajectory since, for example, you can speed up or slow down on a "straight line" and feel the force of acceleration. The only straight line that can be used to define an inertial frame is the geodesic path described in Einstein's General Theory of Relativity.

Artificial satellites have been used since the 1960s to keep the earth in a steady orbit, as it was noticed in the 50s that days were slowing down. Without them we would have already experienced another iceage by now.

Sputnik 1, the first man made object to orbit the earth. And we've been polluting like crazy up there ever since.

I believe that is around 90 minutes or about an hour and a half. I'm pretty sure of that.

what new sattelites were launched recently

the earths gravitational pull keeps them in rotation with the earth along with centrifugal force also newtons law applies- an object will stay in motion unless acted upon by an outside force

A satellite transmits and receives transmitted signals sent by broadcasters to provide information to accessing areas. it looks at stars and the moon. it tells the scientists what is out of space.

Use of unmanned space craft eliminates the years of training needed for astronauts. It allows for missions of much longer durations, as well as increased distances beyond where humans can safely travel.

There have been many space probes to Venus. Here are a few important ones: * Mariner 10 (NASA) * The Venera series of probes (Roscosmos) * Magellan (NASA) * Venus Express (ESA) (check related link)

A Park In Space : according to the math worksheet

a while probaly a few months

The second attempt to launch Sputnik 3 was successfully done on may 15 1958.

The earth is a planet. An earth satellite is an artificial satellite that orbits the earth A geostationary satellite is an earth satellite that orbits at a height (approximately 22,000 miles) precisely determined to ensure that the satellite remains over the same spot on the earth's surface at all times, thus appearing from the earth to be stationary in the sky.

A geostationary satellite has to be orbiting Earth in the equatorial plane, but travelling at the same speed as the Earth's rotation, so that it is constantly over the same spot on Earth. They have to stay at a fixed height, about 36,00 kilometres or 22,000 miles above the earth. They can directly communicate with a station on Earth, which can aim it's communications, through antennae, directly at the satellite, without having to adjust the antennae.

No satellites have been discovered yet in orbit around Mercury. As of now, the answer to the question is zero.