Comets

Did all comets have the same length orbits as other comets?

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2013-02-16 23:15:17
2013-02-16 23:15:17

No. the orbits of comets vary greatly.

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The orbits of comets are much more irregular than those of planets. Probably the majority do orbit in the same direction, but it's not a sure thing.


Yes, they do. But their orbits are highly eccentric. That means that their orbit first takes them very close to the Sun and then very far away, making the orbit very elongated. Also, all the planets orbit the Sun in more-or-less the same plane. ie, All the orbits are in line (Picture a disc). The orbit of most comets, on the other hand, are not in the same plane. Check the images in the related links for a better idea on their orbits.


Some comets orbit the Sun in the same direction as the planets; however, not all do. Other comets orbit in the opposite direction.


Comets have highly elliptical orbits. Often, their orbits have a close approach to the sun (perihelion) well inside the orbit of Mercury, and a far point (aphelion) beyond Neptune.


When a comet has an orbit that is a parabola it never returns. This is because parabolas never meet in the same place that they start.


Other than length they appear to be the same.


Are all orbits the same shape????


Almost everything orbits the Sun counter-clockwise, which is the same direction in which the Sun itself spins. We believe that this is because the entire planetary nebula from which our entire solar system formed was probably rotating that way. Most - but not all! - comets and asteroids also orbit the Sun in a CCW direction. We have discovered a few that do not, and we can't be sure why. A logical guess would be that they got too close to Jupiter or one of the other planets, and were "slingshotted" into reverse orbits. Some comets have orbits that are almost perpendicular to the ecliptic.


Yes. The orbits of the the main bodies of the solar system have not changed and the stars have not moved much relative to one another. The one exception might be with individual comets, whose orbits can become unstable.


Unfortunately, you neglected to include the list of allowable choices that "follows" the question. Still, I know the answer. The force that keeps comets in closed orbits around the sun is the one that has the same effect on the planets; gravity. The only difference is that the orbits of the long-term comets are much more 'eccentric' (long and skinny) than those of the planets, so they have much shorter minimum distances from the sun, and much longer maximum distances, than planetary orbits have. So, the correct awnser is Gravity.


The moon rotates around it's axis (in it's day) in the same amount of time as it orbits the Earth (it's year).


No, they are not. Comets are much, much smaller than planets.


In general no. A regular hexagon has the same length on all sides. Also, there are other hexagons with the same length on all sides that are not regular.


We only know about comets that travel around our own Sun, but we would expect that other solar systems might have the same kinds of debris left over, and that other stars might have comets also. But our instruments and telescopes aren't good enough to let us detect such small objects as comets so far away.


The eccentricity of an ellipse is a number related to how "egg-shaped" it is ... the difference between the distance through the fat part and the distance through the skinny part. That's also related to the distance between the 'foci' (focuses) of the ellipse. The farther apart the foci are, the higher the eccentricity is, and the flatter the ellipse is. Comets have very eccentric orbits. When the two foci are at the same point, the eccentricity is zero, all of the diameters of the ellipse have the same length, and the ellipse is a circle. All of the planets have orbits with small eccentricities.


Comets are often thought of as visitors from other solar systems. Solitary travelers in space. Asteroids can and do exist as "belts" and are usually found in groups that can orbit a central sun very much like planets. Composition can be very different for both objects. Both follow prescribed orbits, hence we are able to predict/know the returning date for Haley's Comet. Am not familiar with any data about asteroids with orbits as far reaching as comets. Because comets follow a predicted orbit, and visit our solar system at regular times, they could be considered part of our solar system the same way as band of asteroids. However, comets can and do leave our solar system and pass through others, so they are more visitor than permanent part of our solar system.



All comets do not orbit the Sun in the same direction as the planets. Some comets orbit in a clockwise direction, while others orbit in a counterclockwise direction.


No, they are quite different.


Comets and asteroids are the same, but differ in the fact that comets have surface activity with their characteristic tail.


No. Most comets are about the same age as the solar system as they formed with it.


If the Earth did not rotate it would be void of any life, one side would be a waterless desert the other side would be a frozen wasteland. _________________________________ The first answer describes a scenario of a planet that rotates at the same rate that it orbits, like the way Earth's moon rotates at the same rate that it orbits Earth. If Earth didn't rotate, a day would be the same length as a year, like at the poles of Uranus.



The mutual gravitational attraction between the earth and moon. The same phenomenon is responsible for the stable, closed orbits of all the planets, asteroids, and comets in their travels around the sun,


Because comets were created about the same time as the Earth.



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