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Do planets orbit the sun in a triangular orbit same speed perfect circles or nearly circular orbits?
The planets' orbits are technically ellipses but in practice they are all nearly circular.
Kepler discovered from high-quality measurements by Tycho Brahe that the orbits are elliptical. They are ellipses with a small value of eccentricity, the parameter that measures how elongated an ellipse is.
When the eccentrcity is small, the ellipse looks like a circle but with the focus (where the Sun is) displaced from the centre, by an amount equal to the average distance times the eccentricity. That is why the earlier theory, which used circles and epicycles, gave very good results even though it was not quite right.
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What path do planets orbit the sun?
Planets orbit the Sun in elliptical paths, as described by Kepler's First Law of Planetary Motion. While these orbits are not perfect circles, they are generally close to circular for the major planets. The gravitational pull of the Sun keeps the planets in their orbits, and the specific shape and orientation of each orbit are determined by the planet's velocity and distance from the Sun.
The greatest inaccuracy in Copernicus' model of the solar system was that the planets?
The greatest inaccuracy in Copernicus' model of the solar system was that he still believed that planets moved in perfect circles, when in fact they move in ellipses. This led to inaccuracies in predicting planetary positions.
Who worked out that the planets orbits are flattened circles?
Johannes Kepler, using measured planetary positional data provided by Tycho Brahe, showed that the orbits of the planets were ellipses ("flattened circles"), with the Sun at one focus of the eliipse.
Who replaced circles with ellipses in a helicentric model of the universe?
Johannes Kepler replaced circles with ellipses in the heliocentric model of the universe.
How did Ptolemy explain planet motion?
Ancient astronmers used shell theory. The earth was center, then came the moon, planets and sun, then other stars. At first it was a circular system. It seemed more "perfect", that degenerated into ellipses as the mathematics didn't work out.
Kepler discovered the planets orbit are elliptical not?
Kepler discovered that the planets orbit the Sun in elliptical shapes, not in perfect circles as previously believed. This finding is summarized in Kepler's first law of planetary motion.
Do planets move around the sun circular in orbit?
No, planets do not move around the sun in perfect circles. Instead, they follow elliptical orbits, which are elongated circles. This means that the distance between a planet and the sun varies as it moves along its orbit.
What 2 planets have the most cicular orbits?
Venus has an eccentricity of 0.00677323 Neptune has an eccentricity of 0.00858587 Triton, a moon of Neptune, orbit is as close to a perfect circle with an eccentricity of 0.000016 The Earth for comparison has an eccentricity of 0.01671022
What path do planets orbit the sun?
Planets orbit the Sun in elliptical paths, as described by Kepler's First Law of Planetary Motion. While these orbits are not perfect circles, they are generally close to circular for the major planets. The gravitational pull of the Sun keeps the planets in their orbits, and the specific shape and orientation of each orbit are determined by the planet's velocity and distance from the Sun.
The greatest inaccuracy in Copernicus' model of the solar system was that the planets?
The greatest inaccuracy in Copernicus' model of the solar system was that he still believed that planets moved in perfect circles, when in fact they move in ellipses. This led to inaccuracies in predicting planetary positions.
Why your planets revolve in elliptical orbit rather than circular orbit?
Planets revolve in elliptical orbits due to the gravitational influence of other bodies in the solar system. As planets interact with each other, their orbits can become elongated or slightly off-center, leading to elliptical shapes rather than perfect circles. This is a result of the complex dynamics of the solar system.
Why are planets that orbit around the Sun and satellites that orbit around these planets always called ellipses rather than perfect circles?
The planets, and the satellites that orbit around them, are affected by gravity from the sun and other celestial objects. The effects of gravity at different locations during their orbits prevent their orbits from being circular, and they become elliptical (more or less egg-shapped).
Is planetary motion a uniform motion?
Planetary motion almost fits into the category of Uniform Circular Motion. Uniform Circular Motion is an object moving around a circle of constant radius at a constant speed. The planets fill all of these requirements except for the fact that their orbits are slightly elliptical. Their orbital paths are almost perfect circles, but they are so close that for Uniform Circular Motion problems, it is not likely that considering the orbits to be circular will produce an incorrect answer.
Who worked out that the planets orbits are flattened circles?
Johannes Kepler, using measured planetary positional data provided by Tycho Brahe, showed that the orbits of the planets were ellipses ("flattened circles"), with the Sun at one focus of the eliipse.
Who replaced circles with ellipses in a helicentric model of the universe?
Johannes Kepler replaced circles with ellipses in the heliocentric model of the universe.
Why do the planets look like perfect circles?
Gravity causes each point on the outside of the planet to be a roughly equal distance from the gravitational centre.
Are circles orbits of the planets?
NO!!! The planets do NOT orbit in circles. They orbit the Sun in an ellipsoidal manner. An ellipse has two foci. The Sun lies at one of the foci, the other might be deemed to be a 'blind' focus. The Sun does NOT lie at the centre of the ellipse. Also the satellites(moons) orbit their parent planets in a similar manner. It has also been discovered that the planets in an an ellipsoidal manner. That is as each orbit is completed the planet 'over-shoot' their starting point, and the ellipse does not close . See Johannes Kepler, who gave us the Law of orbiting planets sweeping equal arcs in equal times , in 1602 AD.
