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.
Most planets have elliptical orbits around the Sun. These orbits are slightly elongated circles, with the planet closer to the Sun at one end (perihelion) and farther away at the other end (aphelion).
All the planets in our solar system move in elliptical orbits around the Sun. This means their orbits are not perfect circles, but rather slightly elongated shapes.
The orbits of the planets around the sun are generally elliptical in shape, with the sun located at one of the foci of the ellipse. This means that the distance between the planet and the sun varies during its orbit.
There are eight planets in our solar system that are in oval-shaped orbits around the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The orbits of these planets are not perfect circles, but rather slightly elliptical or oval in shape.
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
Kepler realised the planets orbits are not circles; they are ellipses.
Johannes Kepler discovered that planets move in elliptical orbits rather than perfect circles. This was based on his observations of the planets' positions over time, which he detailed in his work "Astronomia Nova" in 1609.
Copernicus
Most planets have elliptical orbits around the Sun. These orbits are slightly elongated circles, with the planet closer to the Sun at one end (perihelion) and farther away at the other end (aphelion).
The shape of most planets' orbits around the sun, including Earth, is elliptical. This means that their orbits are not perfect circles but rather slightly elongated with the sun positioned at one of the foci of the ellipse.
The planets move intheir ellipticalorbits becauseof the gravitation of the Sun combined withthe inertial velocity of the planets(tangentialto their orbital paths). Mathematics shows the resulting orbits must be ellipses. (Some of the ellipses are in factalmost circles.)
All the planets in our solar system move in elliptical orbits around the Sun. This means their orbits are not perfect circles, but rather slightly elongated shapes.
Kepler discovered that the planets orbit the Sun in elliptical shapes. This means that their orbits are not perfect circles, but instead are stretched out ovals with the Sun located at one of the foci of the ellipse.
The planets in our solar system orbit the Sun in elliptical paths, which are elongated circles. These orbits are shaped by the gravitational pull of the Sun and the planets themselves, following Kepler's laws of planetary motion.
The orbits of the planets around the sun are generally elliptical in shape, with the sun located at one of the foci of the ellipse. This means that the distance between the planet and the sun varies during its orbit.
Moons orbit around its planet while the planets orbit the Sun, therefore moons circle the Sun.
There are eight planets in our solar system that are in oval-shaped orbits around the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The orbits of these planets are not perfect circles, but rather slightly elliptical or oval in shape.