Who was the first scientist to theorize that planets move around the sun in elliptical orbits?
9 people found this useful
What evidence do you have that the planets move in elliptical orbits around the sun and not in circular orbits?
Elliptical orbits of the planets around the sun actually match whatwe observe. Newton's Theory of Universal Gravitation states thatplanets will move around the sun in elliptical orbits.
Aristrachus of Samos The first man to theorize that the Earth revolved around the sun isbelieved to be Nicolas Copernicus. In the 1500s he speculated thatrather than the sun circling the Earth, the Earth may actuallyorbit the sun.
Planets orbit the sun in a counter clockwise motion, due to the balance between the Sun's gravity and the gravity of each individual planet.
Since the Sun has the most mass of all the objects in the solar system, it has the strongest gravitational pull. If there were another object in the solar system with more mass than the Sun, the planets (and the Sun itself) would orbit it. If there were no Sun's gravity (or other gravitational …forces) the planets would travel in straight lines instead of orbits. ( Full Answer )
Mercury is the closest planet to the Sun and has an orbital period of 88 Earth days. (Pluto in contrast has an orbital period of about 248 Earth years.)
Because its on its axis. im sorry i diddnt answer this but that up there was the stupidest answer ive ever herd........gosh have some sense!
It is elliptical (oval in shape), with the distance from the Sun varying from 46 million to 70 million kilometers during its orbit.
The elliptical orbit of planets is a result of the gravitation of the sun and the tangential velocity of the planet.
The gravitational pull of the sun cause all celestial bodies in our solar system to orbit around the sun.
A planet is slowest when farthest from the Sun. A planet moves fastest when closest to the Sun
The first recorded person to propose this idea was Aristarchus of Samos and ancient greek astronomer and mathematician. Aristotle is the correct answer. (from SOS)
\n \nThe planets move in their elliptical orbits because of the gravitation of the Sun combined with the inertial velocity of the planets (tangential to their orbital paths).\n. Mathematics shows the resulting orbits must be ellipses. (Some of the ellipses are in fact almost circles.) .
Keplers laws. Kepler deduced that the planets orbit about the sun in an elliptical pattern described by the mass at one focus of two. When the planet (or any satellite for that matter) is closer to the extreme of the ellipse closer to the "real mass" focus, it will travel faster through space, how…ever, when going about the opposite extreme, it will travel slower. The ratio at which this happens is difficult to describe but I will say that the planet will cover the same amount of "area" with the "massive" focus as a center as anywhere else. The reason that it is an ellipse and not a circle? well, the chances of a stranded loner mass enters the gravitational field of a greater mas at just the right angle and a just the right speed are very small. An ellipse is simply easier to manage, at least for nature. ( Full Answer )
All planets orbit the Sun. In order from the Sun. Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune..
Because of the Sun's gravitational pull on the planets combined with the inertia of the planets. The planets would move in straight lines without the Sun's gravity (ignoring all other gravitational forces).
There are 8 planets that orbit around the sun, and a number of moons, asteroids, and comets. The planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
Generally speaking, yes. It should be noted however that the outer planets have a more elliptic orbit (egg shaped).
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 in perfectly circular orbits, then any gravitational perturbation - such as a big solar flare, an asteroid impact, or just the gravitational interaction between the other planets - would have nudged each of the planets into elliptical orbits. A perfectly circular orbit would be like balancing a table on a needle; ANY disturbance would spoil the balance. ( Full Answer )
The planets in our solar system all orbit around our sun, we also know of other suns that other planets (not in our solar system) orbit around.
Johannes Kepler was the first to recognize that configuration, based on his analysis of Tycho Brahe's observational data.
This is a result of the law of gravitation.\n\n. At a very specific speed, a planet would move around the Sun in a circle, maintaining a constant distance from the Sun.\n\n. If the speed of the planet is slightly less than the speed required for a circle, it doesn't have enough momentum, and will …approach the Sun. As it does so, however, its speed and momentum will increase - enough to get away from the Sun again, after half an orbit.\n\n. This is the general idea; the exact calculation of the orbit requires some advanced math. ( Full Answer )
Because the Sun has a great gravitational pull on the planets. Without the Sun the planets would travel in straight lines (ignoring other gravitational forces in the Universe.)
I am not sure about the second factor, but the first is gravity. Classically we would think of the planets taking a curved path through space, due to the force of gravity between them and the sun. In the relativistic view, the planets actually travel in a straight line, but through a space-time whic…h is curved by the masses therein. Either way, the planets' elliptical orbits are due to gravity. The other factor could be inertia? As long as nothing gets in their way, there is nothing to stop them from going forward in their orbits. ( Full Answer )
All planets do not move in elliptical Orbits in the same direction .unless venus .
That theory is supported by observation, and is predicted by other theory that is confirmed by both observation and experiment. 1). A system of planets moving around the sun in elliptical orbits is the simplest structure that produces the motions of the planets that we actually see in the s…ky. ( demonstrated by Kepler, working with Tycho's observational data) 2). A theory of universal gravitation, proportional to the product of masses and inversely to the square of the distance between masses, predicts that planets will move around the sun in elliptical orbits. (Newton) ( Full Answer )
Greeks a few centuries BCE. One who's name has come down to us is Aristarchus of Samos.
All closed gravitational orbits are ellipses, whether they're the almost-circular orbits of the planets, or the extremely eccentric orbits of the periodic comets.
No. The seasons are caused by the Earth being tipped to one side. In winter the part of the Earth having winter is the farthest from the Sun and the Sun's rays strike it at a very low angle, meaning that the rays are weaker. In summer, the part of the Earth having summer is closest to the Sun, and …the Sun's rays strike it straignt on, meaning the rays are stronger. You can see from this that while the northern part of Earth is tipped toward the Sun, and is having summer, the southern part of Earth is tipped away from the Sun, and is having winter. ( Full Answer )
a path called the 'orbit' which you used as a verb in the question, but it's also the noun used to denote the path in which the planet keeps orbiting
Two bodies that move around each other in space do so around a central point. If they are of equal mass, then point of rotation will be midway between them and will look like they are moving around the same circular path. If they have different masses, then the point of rotation is closer to t…he object that has more mass, so it will look like the smaller object is orbiting the larger object in an elliptical path, or they are wobbling around each other like the path that a large person and a small person would make as they held hands spinning around on a skating rink. Since the Sun has more mass than the Earth the point of rotation is very close to the Sun. The Earth is relatively small so the effect is small, thankfully so, otherwise we would be very cold one part of the year and boiling the next. By the way, that's how we can tell if a star has a planet orbiting it, because its position in space appears to wobble slightly. ( Full Answer )
The planets in our solar system travel in slightly eliptical orbits, revolving around the sun.
Johannes Kepler and with observations from Galileo Galilei in the 1500's Kepler originally rejected the idea that the planets were not in perfectly circular orbits but no theory explained their motion better.
Kepler didn't prove that statement. In the 400 years or so since he worked on it, it hasn't been proved yet, and it's unlikely that it can ever be proved. It's still "just a theory". Kepler only demonstrated that if you make that simple assumption, it comes very close to explaining every mo…tion of the real planets and moons that we see in the real sky, so it's been adopted as the customary assumption by people who work with the motions of astronomical bodies. It's worked out pretty good so far ... like, if you assume it's true and use it to launch and steer a probe to Mars, then your probe actually hits Mars. But it's still just a theory, and it probably always will be. So if you come up with a theory that comes closer to explaining what we actually see in the sky, then your theory will be adopted and Kepler's will be junked. That's how Science works. ( Full Answer )
Both of them move in elliptical orbits: the Moon moves in an elliptical orbit around the Earth, and the Sun moves in an elliptical orbit around the galactic center.
kapler Johannes Kepler discovered that planet orbits are elliptical. Johannes Kepler he was Tycho Brahe's (Bra-hay) assistant, although after he
As the planet approaches perihelion (point of nearest approach to the Sun), its orbital velocity gets faster, and it is fastest at perihelion. Similarly, at aphelion (point of furthest approach to the Sun), the orbital velocity is slowest.
the planet moves around the orbit because it is heavy and strong enough to pull its self in a circle around the sun. Thanks!:)
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune. Hope this helped! :) /\ || //|\\
It was a German astronomer by the name of Johannes Kepler who did awhole lot of geometrical calculations from new and unusuallyaccurate observations made by Tycho Brahe. Kepler showed that theplanets each move in an elliptical orbit and he gave three lawsdescribing exactly how they move, and it was …found to be much moreaccurate than the previous models of Ptolemy and Copernicus. He did not know why they behaved as they did and we had to waituntil Isaac Newton explained it using his new theory of gravity. ( Full Answer )
Only at a very specific speed would the orbit be circular. If (for example) the speed is slightly less than that required for a circular orbit, Earth gets closer and closer to the Sun - for a while. While this happens, it also gets faster, and eventually gathers enough momentum to move away from the… Sun again - the result is the elliptical orbit. ( Full Answer )
Who theorized that the moon the sun and the planets moved in a perfectly circular orbits around the earth?
The theory was officially written down by Plato, teacher of Aristotle, in 4th century B.C. Most ancient Greek astronomers followed the lead. The most recent well-known astronomer to hold to the theory was Tycho Brahe, in 16th century A.D. He created a revised geocentric model which explained the mot…ion of planets pretty accurately, but the motion paths were much more complicated than the heliocentric model. ( Full Answer )
The planets move in almost circular paths round the Sun but Johannes Kepler discovered from measurements by Tycho Brahe that the orbits are actually ellipses with low eccentricity.
Johannes Kepler did this important work at the start of the 1600susing accurate observations made by his employer, Tycho Brahe.
Plenty of people had thought that the Earth might be moving roundthe Sun, for example Copernicus and Kepler. But it was not a theorythat was accepted during their lifetimes because the evidence wasnot strong enough. In the 17th century Newton discovered the law ofgravity and the laws of motion, and …he was able to use thosetheories to explain in detail how the Sun's gravity holds theplanets in their orbits. That convinced many more people. In the 19th century Bessel discovered that a nearby star, 61 Cygni,appears to move forward and back every 6 months as the Earth movesround the Sun. The movement is so slight that it had not beendiscovered before then. That was the final demonstration thatforced everyone to accept the idea of heliocentricity. So acceptance of the heliocentric idea was the product of work byCopernicus, Kepler, Newton and Bessel and of course many others. ( Full Answer )
The Earth goes round the Sun in an elliptical orbit, once everyyear, and this produces the four seasons.
The Earth's orbit is elliptical and it takes a year to get roundthe ellipse once. The ellipse is almost a circle - the minor axis is only 0.014%smaller than the major axis. The Sun is off-centre by 2.5 million kilometres and the Earth isclosest in January (147.1 million km) and furthest in July (15…2.1million km), when it is at either end of the major axis of theellipse. ( Full Answer )
Johannes Kepler made that suggestion, which was confirmed laterwhen Newton's discoveries showed why an object will move in anellipse under the inverse-square force of gravity.
It was Claudius Ptolemy, 98-160. His Ptolemaic system describingthe planets' movements among the stars was generally accepted forabout 1400 years. Until the computer age, the Ptolemaic model wasalso used in planetariums.
Copernicus produced the first heliocentric theory in 1543. It usedcircles and epicycles, like the ancient Ptolemaic theory that hadthe Earth at the centre. Later after accurate measurements by Tycho, Kepler discovered thata better model for a planet's orbit would be an ellipse with theSun at one foc…us. His theory came out in 1609. No-one knew which of the theories was right except that Kepler'swas a little more accurate. But in the late 1600s Newton came upwith discoveries that confirmed that Kepler's theory was consistentwith new physical theories. This is the model used now. ( Full Answer )
You are probably thinking of Mercury which revolves around the Sunin 59 days. The word 'rotate' means turning on its axis. We callthat a day. The Earth rotates in one day or 24 hours. Mercuryrotates (its day) in 176 Earth days. Mercury is really interestingbecause its day is almost 3 Mercury Years l…ong. ( Full Answer )