no, many planets have an orbit that is more of an oval shape. Few planets actually revolve around the sun, such as the moon, which actually revolves around the Earth, because earth has the closest amount of high atmospheric pressure. Also the sun is not the center of the universe. It is probably a humongous black hole about 28,000 lightyears away. So, Schmidt, You are not the center of the universe. (c)
A comets orbit is highly eccentric, spending most of its time far out on the edge of the solar system and occasionally coming in closer to the sun. Planets orbits are more regular, closer to a circular orbit. A comets orbit also crosses the paths of planets, while each of the eight planets have their own orbit and don't cross paths. A comet does not usually orbit the sun on the same plane as the planets. Each of the planets orbits the sun more or less on the same plane. Due to the varying distance from the sun, the orbital speed of a comet varies greatly. Closer to the sun it travels quickly, far out on the edge of the solar system it will move much more slowly.
Most cross orbits of planets which allows it to hit the planets easier. They do not go into a full orbit at all.
The orbits of the planets, including Mars, are eliptical, not circular. Keplers observed positions did not fit a circular orbit. The differences led him to discover that the orbits were not circular, but eliptical.
Most planets in our solar system have slightly elliptical orbits, meaning their paths around the Sun are not perfectly circular. This results in them being closer to the Sun at some points during their orbit and farther away at other points. The degree of ellipticity varies for each planet.
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.
Venus has the least eccentric (most nearly circular) orbit of the eight in our solar system.
No, not all planets have elliptical orbits. While most planets in our solar system have nearly circular orbits, some planets, like Mercury and Pluto, have more elliptical orbits. Additionally, exoplanets outside our solar system can have a variety of orbital shapes.
venus and pluto
venus and pluto
Pluto and Abby University
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
Planetry orbits are elliptical. Most planet's orbits are nearly circular apart from Mercury and Pluto.
1. Planets in the orbits all conform to Kepler's three laws of planetary motion, 2. The orbits are all nearly in the same plane,3. The orbits are all elliptical, but not very ellptical and near-circular in shape, with the Sun slightly off-centre.Added:p2 = a3P. The planetary orbital period in earth years.a. Distance from sun in astronomical units, based on 1 AU for earth. ( for example, Mars would be about 1.5 AU and you would use this value in the equation, not the actual distance )
Venus has the most nearly circular orbit of all the planets in our solar system. Its eccentricity, a measure of how elongated an orbit is, is only 0.0067, making it almost circular compared to other planets like Mercury or Mars.
Probably Venus, who's orbit varies only imperceptibly from a perfect circle. Venus's orbit is elliptical, but not so the average layman would notice (to astronomers, of course, it is quite different).
Planets follow elliptical orbits, it would be extremely unlikely for any natural orbit to be perfectly circular. Though the orbits of some of our solar system's planets, shrunk down to fit on a standard book page, would appear to be nearly circular.
Jupiter's orbit is an ellipse with an eccentricity of 0.048, which means that it looks like a circle with the Sun off-centre by an amount equal to 0.048 times the average radius. Uranus has an eccentricity of 0.047 and that is the closest among the other planets.