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That's Kepler's third law. He derived it empirically from Tycho's observational data,

and it can be derived from Newton's law of universal gravitation.

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Related Questions

Why does it take longer for the planets farther from the sun to revolve around the sun?

Planets farther from the sun have larger orbits, which means they have to travel a greater distance to complete one revolution around the sun. This larger distance results in a longer orbital period compared to planets closer to the sun. It follows Kepler's third law of planetary motion, which states that the square of a planet's orbital period is proportional to the cube of its average distance from the sun.


What planets orbit overlaps another?

No two planets in our solar system have overlapping orbits. Each planet follows its own distinct orbital path around the Sun. The paths are unique and do not intersect or overlap.


The square of the orbital period of a planet around the sun is proportional to the cube of the planet's orbital radius?

Yes, spot on, good guess . .


What are the member of the solar system thst follow or move to its orbit?

All massive objects in the solar system feel the gravitational influence of their primary and most follow an orbital path around it - the majority of the mass orbiting the Sun, including planets, asteroids, comets, etc. A common orbital path, such as the planets follow, is shaped like an ellipse with the Sun at the ellipse's focus. Moons which orbit planets follow a smaller orbital path around their primary (for example, the Earth's Moon follows a path around Earth which it completes in about a month). If objects felt mutual gravitational pull of another object but did not have sufficient relative orbital momentum, they would collide.


What is path that a planet travels on around the sun called?

Planets have elliptical orbits around the sun.


Do planets revolve around the sun at the same speed?

No, planets do not revolve around the sun at the same speed. Their orbital speeds depend on their distance from the sun - planets closer to the sun have shorter orbital periods and faster speeds, while those further away have longer orbital periods and slower speeds.


What planets orbital speed is about 30 kilometers per second?

earth orbital speed is 30 kilometers per second!!


What happens to a planets time of orbit around the sun as it gets farther from the sun?

As a planet moves farther from the Sun, its orbital period increases, meaning it takes longer to complete one orbit. This relationship is described by Kepler's Third Law of Planetary Motion, which states that the square of a planet's orbital period is proportional to the cube of its average distance from the Sun. Consequently, planets that are more distant from the Sun, like Neptune, have significantly longer orbital periods compared to those closer, like Mercury.


Which planets orbital speed is thirty kilometers per second?

The planet with an orbital speed of around 30 kilometers per second is Earth. Its average orbital speed around the Sun is approximately 29.78 kilometers per second.


Why do planets revlolve around the sun?

Inertia is trying to keep each planet moving in a straight line, and the sun's gravity is trying to pull each planet into the sun. The resultant of those two vectors is the orbital path each planet follows.


Does the earth and other planets revolve around the sun?

Yes, the Earth and other planets in our solar system revolve around the Sun in elliptical orbits due to the force of gravity. This orbital motion is what causes the planets to move in their respective paths around the Sun.


What will happen if the planets do not follow their orbits?

If a planet doesn't follow its orbital path, then it may crash into other planets, moons and/or other object floating around in space.