Asked in Earth Sciences, Planetary Science, Scientists
Do the inner planets and outer planets have an elliptical orbit?
Yes, all the planets have elliptical orbits around the sun, although they do not all have the same degree of eccentricity in their elliptical orbits. ...
Asked in Astronomy
What is responsible for Earth's elliptical orbit around sun?
As far as we are aware, there are NO astronomical bodies in perfectly circular orbits. EVERY orbit is elliptical. Elliptical orbits are the natural order of things. If a planetary system had formed with the planets in highly eccentric orbits, then over the course of a few billion years, all but a couple of the planets would have been perturbed out of the system, or into the star itself. In a planetary system in which by some far-fetched chance the planets had developed...
Asked in Planetary Science
Are planetary orbits all circular?
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. ...
Asked in Astronomy, Planetary Science
If the planets' orbits were circular would their distance from the sun always be the same?
Yes. However, the orbits of all planets are elliptical. Some planets, like Earth, have a very low "eccentricity", which is a measure of how non-circular they are. Earth's orbit is not quite circular, but fairly close. Other planets, like Mars, have more eccentric orbits, and their perihelion and aphelion distances are substantially different. ...
Asked in Planetary Science, The Solar System
Why do planets have circular and elliptical motions in the solar system?
The scientific explanation lies in Kepler's laws of planetary motions, which were discovered by Newton to be linked with the law of gravity. All the planets have elliptical orbits, and many of those are close being circular. ...
Asked in Astronomy, Planetary Science, Planet Mercury
Is mercurys orbit elliptical?
Yes. It varies in distance from the sun. At closest it is about 46,000,000 km and at farthest, 69,800,000 km away. It is the most elliptical orbit of the solar system planets, the measure of which is eccentricity. Mercury is 0.205. Zero is a circle higher numbers are more elliptical, with 0.999... as the limit. All planets have elliptical orbits. ...