Science and del'univers of the earth: the earth sciences and the universe were born from the need for humans to understand how their environment and determine its origins.These sciences are characterized by a large interdisciplinary and interconnectivity, mainly using the theories and principles of physics, mathematics chimieet.If advances in Earth Sciences and Astronomy allow better understanding of some aspects of Earth Sciences, the latter are also used in similar studies celestial bodies other than Earth.The Kuiper Belt, sometimes Edgeworth-Kuiper of appeléeceinture, is an area of solaires'étendant system beyond the orbit of Neptune, between 30 and 55 astronomical units (AU).This ring-shaped area is similar to the asteroid belt, but wider, 20 times as wide and 20 to 200 times more massive.As the asteroid belt, it is mainly composed of small, rest of the universe.
The observable universe is defined as all that is observable and measurable, and the speed of the speed limit lumièreétant, all that is located beyond the horizon cosmologiquene can be observed or can not influence what can be observed.The cosmological principle and appointed a result of Edward A. Milne (1896-1950), states that the observable universe is a large scale, homogèneet isotropic.The Universe is essentially identical in all directions, the light rays coming from all directions run through a priori the same distance at the same time.The most distant objects in the observable universe are also the youngest and closest to the Big Bang, as are those whose light has taken more time to reach the observer.They are also seen with a shift to the rouged'autant larger than the object is far away.Since the discovery of the first object in 1992, over a thousand other objects were discovered in the Kuiper Belt and contains more than 70,000 bodies of more de100 kmof diameter.She would be the main reservoir of comets périodiquesdont the period of revolution is less than 200 years.Known objects of the Kuiper Belt.Data image from the Minor Planet Center.The main objects of the Kuiper belt are green (forming a circle of diameter half of the image) and orange scattered objects (most scattered points without label).The four outer planets are blue (with title);Neptuneen troyensde the yellow asteroids, those Jupiteren rose.The scale is in astronomical units.Star, sun.Spectral type G2 V
Apparent magnitude-26.74.Disk.Type Hard debris
Orbital characteristics
Semi-major axis (a) 30-55 ua
Physical characteristics
Discovery.Date First member (Pluto) discovered in 1930
Additional Information.The Kuiper Belt (sometimes Edgeworth-Kuiper appeléeceinture of pronounced in Dutch: [kœypər] 1), is an area of solaires'étendant System beyond the orbit of Neptune, between 30 and 55 astronomical units (au) 2. The ring-shaped area is similar to the asteroid belt, but wider, 20 times as wide and 20 to 200 times more massive 3, 4. As the asteroid belt, it is mainly composed of small bodies, remnants of the formation of the solar system, and at least three dwarf planets, Pluto, Haumea Makémakéet (Érisest a scattered object located beyond the Kuiper Belt).However, while the asteroid belt is composed primarily of rock and metal body, the objects in the Kuiper belt are mostly made of frozen volatiles such as methane, ammoniacou water.The Kuiper Belt is not to be confused with the Oort cloud, still theoretical area and supposed to be a thousand times more distant.The objects of the Kuiper belt and the scattered objects and any potential member Hillset cloud of Oort, are collectively called trans-Neptunian objects.Beyond Pluto, spotted in 1930, and its double Charon, detected in 1978, the first Kuiper object was discovered in 1992. Since then, more than a thousand other objects were discovered in the Kuiper Belt and contains more than 70 000 body more of100 kmof diameter 5. It would be the main reservoir of comets périodiquesdont the period of revolution is less than 200 years.The centaureset the scattered objects such that Eris, would come in.Triton, the largest satellite Neptunepourrait be an object of the Kuiper belt would have been captured by the planet 6. (134340) Plutonest the largest known object in the Kuiper belt.Observable universe: Representation to scale logarithmiquede the observable universe with the center, the solar system, and gradually increasing distance from the center, nearby stars, the arm of Perseus, the Milky Way, nearby galaxies, the network of large-scale structures, the background radiation cosmologiqueet, on the outskirts, the invisible plasma Big Bang.That our universe has a finite age, 13.819 billion years, the light of celestial objects beyond the horizon has not had time to reach us, and these objects are invisible;However, the observable universe grows by nature over time: the radius of the visible universe is thus a more light-second per second or equivalent a more light-year every year, and even more taking into account the expansion of the Universe.The universe observableest a term used to describe cosmologiepour the visible part of our universe.By definition, this is a ball whose limit is located at the cosmological horizon, which Terreconstitue the center.It is a relative concept, and other observers elsewhere in the universe does not have the same observable ball our Universe.
Apparent magnitude-26.74.Disk.Type Hard debris
Orbital characteristics
Semi-major axis (a) 30-55 ua
Physical characteristics
Discovery.Date First member (Pluto) discovered in 1930
Additional Information.The Kuiper Belt (sometimes Edgeworth-Kuiper appeléeceinture of pronounced in Dutch: [kœypər] 1), is an area of solaires'étendant System beyond the orbit of Neptune, between 30 and 55 astronomical units (au) 2. The ring-shaped area is similar to the asteroid belt, but wider, 20 times as wide and 20 to 200 times more massive 3, 4. As the asteroid belt, it is mainly composed of small bodies, remnants of the formation of the solar system, and at least three dwarf planets, Pluto, Haumea Makémakéet (Érisest a scattered object located beyond the Kuiper Belt).However, while the asteroid belt is composed primarily of rock and metal body, the objects in the Kuiper belt are mostly made of frozen volatiles such as methane, ammoniacou water.The Kuiper Belt is not to be confused with the Oort cloud, still theoretical area and supposed to be a thousand times more distant.The objects of the Kuiper belt and the scattered objects and any potential member Hillset cloud of Oort, are collectively called trans-Neptunian objects.Beyond Pluto, spotted in 1930, and its double Charon, detected in 1978, the first Kuiper object was discovered in 1992. Since then, more than a thousand other objects were discovered in the Kuiper Belt and contains more than 70 000 body more of100 kmof diameter 5. It would be the main reservoir of comets périodiquesdont the period of revolution is less than 200 years.The centaureset the scattered objects such that Eris, would come in.Triton, the largest satellite Neptunepourrait be an object of the Kuiper belt would have been captured by the planet 6. (134340) Plutonest the largest known object in the Kuiper belt.Observable universe: Representation to scale logarithmiquede the observable universe with the center, the solar system, and gradually increasing distance from the center, nearby stars, the arm of Perseus, the Milky Way, nearby galaxies, the network of large-scale structures, the background radiation cosmologiqueet, on the outskirts, the invisible plasma Big Bang.That our universe has a finite age, 13.819 billion years, the light of celestial objects beyond the horizon has not had time to reach us, and these objects are invisible;However, the observable universe grows by nature over time: the radius of the visible universe is thus a more light-second per second or equivalent a more light-year every year, and even more taking into account the expansion of the Universe.The universe observableest a term used to describe cosmologiepour the visible part of our universe.By definition, this is a ball whose limit is located at the cosmological horizon, which Terreconstitue the center.It is a relative concept, and other observers elsewhere in the universe does not have the same observable ball our Universe.
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