Earth, being at the center of the universe, would have the same shape as the latter ; ;

Amateur astronomers often contribute toward activities such as monitoring the changes in brightness of variable stars and supernovae, helping to track asteroids, and observing occultations to determine both the shape of asteroids and the shape of the terrain on the apparent edge of the Moon as seen from Earth.

Explorer satellites have made important discoveries: Earth's magnetosphere and the shape of its gravity field ; the solar wind ; properties of micrometeoroids raining down on the Earth ; much about ultraviolet, cosmic, and X-rays from the solar system and universe beyond ; ionospheric physics ; Solar plasma ; solar energetic particles ; and atmospheric physics.

The Flat Earth model is an archaic belief that the Earth's shape is a plane or disk.

It was also typically held in the aboriginal cultures of the Americas, and a flat Earth domed by the firmament in the shape of an inverted bowl is common in pre-scientific societies.

Aristotle accepted the spherical shape of the Earth on empirical grounds around 330 BC, and knowledge of the spherical Earth gradually began to spread beyond the Hellenistic world from then on.

But by the 1st century AD, Pliny the Elder was in a position to claim that everyone agrees on the spherical shape of Earth, although there continued to be disputes regarding the nature of the antipodes, and how it is possible to keep the ocean in a curved shape.

A very recent essay by Leone Montagnini, discussing the question of the shape of the Earth from the origins to the late Antiquity, has shown that the Fathers of the Church shared different approaches that paralleled their overall philosophical and theological visions.

Europe's view of the shape of the Earth in Late Antiquity and the Early Middle Ages may be best expressed by the writings of early Christian scholars:

A tiny gravitational force would arise from the fact that the Earth does not have a perfectly symmetrical spherical shape, as well as forces from other bodies such as the Moon.

* The Ringworld is an artificial world structure with three million times the surface area of Earth, built in the shape of a giant ring orbiting its sun, a million miles wide and with a diameter of 186 million miles.

The exact shape of the Earth is not a simple mathematical shape ( sphere or oblate spheroid ) at the level of precision required for defining a standard of length.

The irregular and particular shape of the Earth ( smoothed to sea level ) is called a Geoid, which means " Earth-shaped ".

The magnetosphere of Earth is a region in space whose shape is determined by the Earth's internal magnetic field, the solar wind plasma, and the interplanetary magnetic field ( IMF ).

The theoretical tidal contribution to ΔT is about + 42 s / cy < sup > 2 </ sup > the smaller observed value is thought to be mostly due to changes in the shape of the Earth.

Note that that while bound orbits around a point mass or around a spherical body with an Newtonian gravitational field are closed ellipses, which repeat the same path exactly and indefinitely, any non-spherical or non-Newtonian effects ( as caused, for example, by the slight oblateness of the Earth, or by relativistic effects, changing the gravitational field's behavior with distance ) will cause the orbit's shape to depart from the closed ellipses characteristic of Newtonian two-body motion.

* The shape and structure of Earth ( roughly spherical, see also Spherical Earth )

Being an oblate spheroid, the Earth has a nonspherical shape, bulging outward at the equator.

Economics and other factors that applied to exploration and colonization on Earth are the same factors that shape the Traveller Universe.

Thus, there is freshness not only in the individual movements of the dance but in the shape of their continuity as well.

Says he, `` I may never imagine that in the struggle between personal and supra-personal responsibility it is possible to make a compromise between the ethical and the purposive in the shape of a relative ethic ; ;

His suggestion that the prestige colleges be made the training institutions for medical, law and graduate schools will run into strong opposition from these colleges themselves -- even though what he is recommending is already taking shape as a trend.

and the sad part of it is that we had one, which was rounding into excellent shape, and we let it disintegrate and die.

A Barrette Swiss pattern file is handy since its triangular shape with only one cutting face will allow you to work a surface without marring an adjoining one.

If clay is slightly out of shape, square straight sides with guide sticks or rulers pressed against opposite sides, or smooth round pieces with damp fingers.

A stem jig is next cut to the proper shape and temporarily fastened to frame one.

A large picnic area or camping development is most efficient in shape as a square or rectangle several hundred feet in width in preference to a long narrow area less than one hundred feet wide.

There is another means which should show the direction and relative value of the stresses in viscoelastic fluids that is not mentioned as such in the literature, and that is the shape of the suspended drops of low viscosity fluids in shear fields.

Just as the pressure exerted by surface tension in a spherical drop is Af and the pressure exerted by surface tension on a cylindrical shape is Af, the pressure exerted by any curved surface is Af, where **yg is the interfacial tension and Af and Af are the two radii of curvature.

Though it is not easy to apply the evidence of the Iliad to any specific era, this marvelous product of the epic tradition had certainly taken definitive shape by 750.

It was because of this chain-reaction as much as for any other reason -- that is, because of the growing independence of the planar unit in collage as a shape -- that the identity of depicted objects, or at least parts of them, re-emerged in Braque's and Picasso's papiers colles and continued to remain more conspicuous there -- but only as flattened silhouettes -- than in any of their paintings done wholly in oil before the end of 1913.

By using instruments of gradually increasing size, the vagina is gently, and with minimum pain at each stage, taught to yield to an object of the appropriate shape.

Make sure that the metal tube through which the wire passes is in the shape of an inverted `` L '', the foot of the `` L '' about three inches long, so that the puppet can hang directly under the light.

Claude Jannequin's vocal description of a battle ( the French equivalents of tarantara, rum-tum-tum, and boom-boom-boom are very picturesque ) is lots of fun, and the singers get a sense of grace and shape into other chansons by Jannequin and Lassus.

Adobe (, ; Arabic: الطوب ) is a natural building material made from sand, clay, water, and some kind of fibrous or organic material ( sticks, straw, and / or manure ), which the builders shape into bricks ( using frames ) and dry in the sun.

Depending on the form into which the mixture is pressed, adobe can encompass nearly any shape or size, provided drying time is even and the mixture includes reinforcement for larger bricks.

As a group, agnostids are isopygous, meaning that their pygidium is similar in size and shape to their cephalon.

Naturally it will be dictated to a large extent by the shape and size of your land.

image: Goelbench06390140. JPG | The unique shape of the serpentine bench enables the people sitting on it to converse privately, although the square is large.

Anthropologist Arnold Henry Savage Landor described the Ainu as having deep-set eyes and an eye shape typical of Europeans, with a large and prominent browridge, large ears, hairy and prone to baldness, slightly flattened hook nose with large and broad nostrils, prominent cheek bones, large mouth and thick lips and a long region from nose to mouth and small chin region.

In September 1692, Sibbald found a blue whale that had stranded in the Firth of Forth — a male 78-feet-long — which had " black, horny plates " and " two large apertures approaching a pyramid in shape ".

Members of Carnivora have a characteristic skull shape with relatively large brains encased in a heavy skull.

In addition to their microscopic structure, large crystals are usually identifiable by their macroscopic geometrical shape, consisting of flat faces with specific, characteristic orientations.

At the end of September, Navy reconnaissance aircraft photographed the Soviet ship Kasimov with large crates on its deck the size and shape of Il-28 light bombers.

However, if the shape is complex with many features, the algorithm spends a large amount of time tracing the edges of the region trying to ensure that all can be painted.

Because waves at different frequencies propagate at differing phase velocities in dispersive media, for a large frequency range ( a narrow envelope in space ) the observed pulse would change shape while traveling, making group velocity an unclear or useless quantity.

This large shield was made possible partly by its shape, which allowed it to be supported on the shoulder.

The port's facilities include cranes, large berths, and warehouses, but these facilities are in universally poor shape.

The most famous aspect of the production is Craig's use of large, abstract screens that altered the size and shape of the acting area for each scene, representing the character's state of mind spatially or visualising a dramaturgical progression.

Although large sections of the walls have since collapsed into the harbour, much of shape and scale of the beds can still be seen today.

This shape provides a large dose of insulin up front, and then also extends the tail of the insulin action.

When perched with the wings folded, ivory-bills of both sexes present a large patch of white on the lower back, roughly triangular in shape.

We have seen a few cavities of the appropriate size and shape for ivory-bills, but these can be old, or exceptionally large Pileated Woodpecker cavities, or mammal-enlarged Pileated Woodpecker cavities .… Given the results, it is unlikely a population of any meaningful size of Ivory-billed Woodpeckers exists in south Florida.

The main part of the building is a distinctive conical shape with a spiral walkway and large atrium inside, similar to the Solomon R. Guggenheim Museum in New York.

They are rectangular or trapezoidal in shape with a small enclosing chamber faced with large slabs of stone set on end and sometimes subdivided into smaller compartments.

Nord-Jan has a round shape and is dominated by the high Beerenberg volcano with its large ice cap (), which can be divided into twenty individual outlet glaciers.

The Jedi use a power called the Force and weapons called lightsabers, which emit a controlled plasma flow in the shape of a sword, in order to serve and protect the Galactic Republic and the galaxy at large from conflict or governmental instability.