The orbits of the asteroids are more elliptical and more highly inclined to one another than are the orbits of the planets, but on the average they are neither very elliptical nor very highly inclined to the planetary orbits.
Moreover, all of the planetary orbits lie very nearly in the same plane and are nearly circular in form.
The sun rotates upon its axis in the same direction in which the planets rotate and perform their revolutions, and the orbits of the planets are inclined at small angles to the plane of the sun's equator.
The amount of this shift can be very accurately measured, and gives the relative velocities of the stars in their orbits directly in miles per second.
The asteroids have orbits that are more flattened or elliptical and these orbits are in some instances highly inclined to the planetary orbits.
These swarms of meteors continue to travel around the sun in the orbits of the former comets.
The orbits have a sort of heart-shape, their apices being turned forwards, and their more convex sides inwards.
The orbits are proportionally larger, the interorbital space more excavated; and the outer straight margins of the supra-temporal fossae are parallel with the longitudinal axis of the skull.
Soon they would surpass in grandeur the uttermost planets, whose orbits they, invisible and imponderable, would traverse without disturbing.
Venus Urania apportioned the orbits of the wandering spheres in those infinite spaces.
Then he came to accept Robert Hooke's hypothesis that planets are kept in their orbits by the combination of an attractive power of the sun and of motion in a straight line that was tangential to their orbits.
Then he deduced the earth's true orbit, and from this the true orbits of the other planets.
The question presents itself whether there then is any other law of force, giving a finite velocity from infinity, under which all finite orbits are necessarily closed curves.
The n formulae of this type represent a normal mode of free vibration: the individual particles revolve as a rule in elliptic orbits which gradually contract according to the law indicated by the exponential factor.
If the friction be relatively small, all the normal modes are of this character, and unless two or more values of [sigma] are nearly equal the elliptic orbits are very elongated.
We have seen that under the law of the inverse square all finite orbits are elliptical.
Let us picture these electrons all moving round in orbits with great velocity.
What is happening is the agitated electrons flying round in their orbits at a speed of trillions of times a second.
Whatever part of the primitive bolt escaped and scattered was drawn out into independent orbits round the sun, forming the "planetesimals" which behave like minute planets.
After this tool has well loosened and partly cut away the intervening flesh, the fingers may be advantageously used to work with, by being pushed in at the orbits of the eyes, to pull out the loose pieces of flesh.
Fill up the orbits with any pieces of loose peat, paper, etc.
Fill up the orbits also with putty or clay to receive the eyes, packing up above and below them to show the various depressions and ridges.
The Preservative Paste now comes into requisition, and with this the skull and orbitsare well painted inside and out.
Fill in the orbits with putty, attending to the eyebrows, reproducing the various muscles underneath, and insert the artificial eyes.
No other amendments were wanting than to mark the orbits of the States with due precision, and provide for the use of coercion, which was the great point.
Within their proper orbits they must still be suffered to act for subordinate purposes, for which their existence is made essential by the great extent of our Country.
As pronounced Cro-Magnon features, both of the Obercassel skulls show an unusually wide face; in both the profiles are straight and the root of the nose depressed, the nose is narrow, and the orbits are rectangular.
The orbits always present the form of a long rectangle, so characteristic of the race along the Vezere.
Schliz characterizes the Bruenn skull as distinguished by the retreating forehead, by massive eminences above the orbits separated by a cleft in the median line, by broad, low orbits, and prominent chin.
The skull is rounded and of great vertical height, with broad, bony ridges above the orbits and a great median crest on top of the skull in old males.
The eyebrow ridges show decided prominences above the orbits but disappear completely in the median line and at the sides and thus differ totally from those in the Neanderthal head.
In the prehistoric Cro-Magnons the brows were strongly developed, the eye orbits low, the chin prominent.
The fact that the planetary bodies of the solar system revolve in elliptical orbits under the joint influence of the two laws just named, expresses yet another law.
The earth, for example, and the other planets would leave their elliptical orbits and hurtle away on a tangential course.
It was Newton, the same genius who disclosed to us the laws of gravity, who first declared that comets moved in orbits, only that these orbits were far more erratic than any of those followed by the planets.
As a matter of fact, it is neither, we come third in order from the sun, for two smaller planets, one very small and the other nearly as large as the earth, circle round and round the sun in orbits lying inside ours.
Between the orbits of these planets is a ring or zone of tiny bodies, also going round the sun.
The smallest orbits take about three and a half years to traverse, and some of the largest orbits known require a period of one hundred and ten thousand years.
The orbits of the planets, as their paths round the sun are called, lie like great circles one outside another at various distances, and do not touch or cut each other.
When I say that the planets go round the sun in circles I am only speaking generally; as a matter of fact, the orbits of the planets are not perfect circles, though some are more circular than others.
The astronomers can take up the work of classifying the planets and getting details of the orbits when we get back.
For the sake of simplicity, he had assumed circular orbits and calculated their approximate orbital velocities from their distance from the sun.
Around this were the orbits of planets, and each of the eleven planets was marked by a different colored stone.
The stately march of the planets in their orbits becomes slower the farther they are from the sun.
Unlike the orbits of the foregoing satellites, which are nearly in the same plane as the orbits of their primaries, those of the satellites of Uranus are almost perpendicular to his own.
Comets of unknown number travel in long elliptical or parabolic orbits round the sun at great velocities.
After calculating the possible conditions and analyzing the actual orbits of Jupiter’s family, he comes to the provisional conclusion that these comets have been drawn from the neighborhood.
Now if the comets are travelling in orbits around the Sun they must be throughout their course within its control, and not within that of some other star; and therefore he computes how far the Sun’s control extends.
The other substantially that the orbits of Uranus and Neptune can be, and are more naturally, explained by assuming appropriate elements therefor, without the intervention of Pluto’s disturbing force.
Illustration: Predicted and Actual Orbits of PLUTO] “In the writer’s judgment this test is conclusive.
At some time, therefore, in the vast ages of the past they must have passed close to the planet, and if so have had their orbits greatly changed by its attraction.
The inference from their periodicity is, that they are small bodies moving round the sun in orbits of their own, and that whenever the earth crosses their orbits, thereby getting into their path, a splendid display of meteors results.
His tables, however, do show from the perturbations of the orbits of Jupiter, Saturn and Uranus that the same are caused by the mutual influence of the planets upon one another.
He, too, veered toward them as he passed, and they in turn recognized the courtesy by going out of their orbits as they passed.
In addition to Kepler's prediction and the indications of Bode's Law, there was a general reason for thinking that a planetary body of some kind should occupy the space between the orbits of Mars and Jupiter.
But the roofs of the orbits rise more obliquely into the cranial cavity, thus diminishing the space for the lower part of the anterior lobes of the brain, and the absolute capacity of the cranium is far less than that of Man.
The orbits vary in width and height, the cranial ridge is either single or double, either much or little developed, and the zygomatic aperture varies considerably in size.
But the planetary orbits turned out to be not quite circular after all, and grand as was the service Copernicus rendered to science, Kepler and Newton had to come after him.
Now, the harmony of the stars has resolved itself into gravitation according to the inverse squares of the distances, and the orbits of the planets are deducible from the laws of the forces which allow a schoolboy's stone to break a window.
The Orbits of Mercury, Venus, the Earth and Mars are drawn approximately to scale, but those of the outer planets are not.
On the same scale, the radii of the Orbits of the outer Planets would, approximately, be as stated below.
The orbits of Mercury and Mars have an appearance of ellipticity because the sun does not occupy the central point in the diagram.
The dotted Circles show the Orbits of the Planets.
From it the reader will gain a clear idea of the shape of the two orbitsand how they are placed with regard to each other.
The Seasonal points on bothOrbits show the Seasons in the Northern hemisphere.
The orbit in which Mars moves in its journey round the sun is very much more eccentric than the earth's orbit; in fact it is more eccentric than the orbits of any of the larger planets.
During a winter holiday at Playford I wrote out some investigations about theorbits of comets, and on Jan.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "orbits" in a variety of sentences. We hope that you will now be able to make sentences using this word.
