Whose satellite was first to orbit earth?

That is called a geosynchronous orbit.

Sputnik-1 was the first artificial satellite to be successfully launched into orbit. You'd have to say that the first satellite was the moon.

The first satellite of Earth is the Moon. The first ARTIFICIAL satellite of the Earth was Sputnik, launched by the Soviet Union in 1957.

The first satellite launched in the orbit of the Earth was the Sputnik 1. It was launched on 1957 by the Soviet Union.

The first satellite (Sputnik I) was launched by the USSR (Russia) to demonstrate that they could launch a satellite into Earth orbit.

The first artificial satellite to successfully achieve earth orbit was Sputnik-1, launched by the USSR in October, 1957.

The first satellite, Sputnik 1, was launched into orbit around the Earth in 1957.

Normally rockets do not orbit the earth. Rockets lift/put satellites into space, some of which orbit the earth. The first satellite to orbit the earth was the Soviet Union's Sputnik-1

Satellite orbit the Earth at different altitudes. A good overview of Low Earth Orbit, Medium Earth Orbit and Geostationary Orbit can be found here: http://www.idirect.net/Company/Satellite-Basics/How-Satellite-Works.aspx

Its a centripetal force, whose origin/source is gravitation.

If a satellite is in geosynchronous orbit, it will take the satellite 24 hours, a day, to orbit the Earth once. This is so because geosynchronous orbit is when a satellite orbit the Earth at such a time, that is is over the Earth at all times.

No country has ever orbited the earth. Scientists and engineers in the USSR placed the first man-made satellite in earth orbit, in 1957.

the name of the first man made satellite to orbit the earth was called sputnik 1

Explorer 1 (1958 Alpha 1) was the first Earth satellite of the US.

A satellite in near-Earth orbit takes about one and a half hours to orbit Earth. The fact that the satellite goes over the poles doesn't change this.

Both of those words refer to points in the orbit of an earth satellite ... the moon or any artificial satellite. Apogee . . . the point in the orbit where the satellite is farthest from the earth. Perigee . . . the point in the orbit where the satellite is closest to the earth.

voyager Explorer 1 was the first US satellite to orbit the earth. It was proceeded by two Soviet Sputnik satellites.

The Soviet Sputnik was the first artificial satellite of Earth. Sputnik was launched on October 4, 1957. The first U.S.A satellite was Explorer 1.

If it doesn't, then it's not an Earth satellite.

It was the first man made Satellite to Orbit the Earth

A balance of forces between gravity, trying to pull the satellite to Earth, and centrifugal, trying to force the satellite away from Earth, is what keeps the satellite in orbit.

The first artificial satellite was the Soviet Sputnik. There have been thousands since then.

As a noun: The rocket placed the satellite into a high Earth orbit. As a verb: The satellite had to travel very fast to orbit the Earth.

The only natural satellite that orbits the Earth is the Moon.

Sputnik 1, launched by the Soviet Union on October 4, 1957, was the first man-made satellite to orbit Earth.