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In A Solar System Far, Far Away
Stars are born surrounded by a spiral disk of gas and dust, called a protoplanetary accretion disk, and the rings of gas swirling around these baby stars store the ingredients needed to form a family of planets. Astronomers have discovered several protoplanetary inclined disks orbiting a distant, bright, burning baby star, and these disks form at about the same time as the baby star – they call it a protostar— was born in the shadowy cloud of his birth. In May 2015, an international team of astronomers announced their discovery of a very young and distant planetary system that may help astronomers gain insight into how our own solar system was born 4.56 billion years ago. The ring of planetary particles surrounding the system’s young parent star bears an eerie and striking resemblance to our own solar system. Kuiper belt which is beyond the largest planet Neptune.
Astronomers who discovered the distant disk used the Gemini Planet Imager (GPI) in the South Gemini telescope in Chile, to detect a bright disc-shaped ring of dust around a distant star that is larger than our own Star, the Sun. The shiny disc is between 37 and 55 Astronomical Unit (AU)–or 3.4 to 5.1 billion miles–from their parent star. This corresponds to the same distance that separates our solar system Kuiper belt from our Sun. One the is equal to the average distance between the Earth and the Sun, which is about 93,000,000 miles. The attractive disk’s brightness is caused by bright starlight reflected from it – and it’s also compatible with a variety of dust compositions, including the ice and silicates that inhabit our planet. Kuiper belt.
NY Kuiper belt is in the outer region of our Sun’s family beyond Neptune, and contains thousands of small icy objects left over from the formation of our Solar System more than four years ago. These icy objects range in size from dust particles to massive bodies like the moon. dwarf planet Pluto.
Protoplanetary accretion disks contain large amounts of nutrient-rich gas and dust that feed hungry, growing bodies. protoplanet. Our own solar system, and other planetary systems, are formed by the gravitational collapse of swirling droplets in the tidal currents of cold, dark, molecular clouds, collapsing through the power of the small and dense lumps in the weight. Haunting our vast Galaxy, these ghostly, cold clouds – the cradles of strangely bright stars – are composed primarily of gas, but with much less dust. Most of the collapsing gaseous and dust particles accumulate in the center, and eventually ignite as a result of the process of nuclear fusion–brings forth a wonderful new star child (the protostar). The rest of the gas and dust, which entered the construction of protostar, eventually evolves into a protoplanetary accretion disk from which planets, moons, asteroids, and comets form. In their early stages, accretion disks are both hot and massive, and can spin their young stars for tens of millions of years.
At the time when the baby star came to burn like the Sun, it came to what is called the T Tauri As it evolves, the hot, massive circumstellar disk becomes thinner and cooler. the T Tauri is a baby star – a young variable star like our Sun that is only active for 10 million years. These dwarf stars have large diameters that are many times larger than our current Sun–but they are still in recession, as young stars similar to the Sun shrink as they grow older. . By the time the flaming baby reaches this stage of development, the less volatile material has begun to coalesce near the center of the surrounding disc, forming a very fine, tightly packed powder. The brittle and brittle powder carries crystalline silica.
The small particles collide and then coalesce into the dense environment of the protoplanetary accretion disk. In this way things grow bigger and bigger – from the size of a pebble, to the size of a rock, to the size of a mountain, to the size of the moon, to the size of the planet. These growing things develop into what is called planetesimal–the first planet building. Planetesimals They can be up to 1 kilometer in size or even larger, and are densely populated within the young disk around a burning star. They can also hang around for long periods of time, with some still existing billions of years after a mature planetary system has formed. In our solar system, asteroids are mostly rock and metal remnants planetesimal It is the basic building block of the four rocky planets: Mercury, Venus, Earth, and Mars. On the other hand, comets are the remnants of ice planetesimal which entered the construction of the quartet of outer planets: Jupiter, Saturn, Uranus, and Neptune.
The Kuiper belt
the Kuiper belt named in honor of the Dutch-American astronomer Gerard Kuiper (1905-1973), who is believed to be the first to announce its existence. It is a region of our solar system beyond the mysterious, dark, and cool region of the giant outer planets, from the orbit of Neptune (at 30 AU) to 50 About AU from our star. In many ways it is similar to Main Asteroid Belt between Mars and Jupiter, but about 20 to 200 times larger. The distance Kuiper belt, such as Large Asteroid Belt, consists of a small body–planetesimal–a remnant of the formation of our solar system. A large number of asteroids are composed of rocks and metals, but most of them Kuiper belt Item (KBO) is made of solids (called “ices”), such as water, methane, and ammonia. the Kuiper belt is the officially recognized home of the trio dwarf planet: Pluto, Haumea and Makemake. Some of the moons of our solar system, such as Triton of Neptune and Phoebe of Saturn, are also thought to come from this distant region.
Since Kuiper belt was found in 1992, the number of known KBOs rose to more than a thousand, and more than 100,000 KBOs more than 62 miles in diameter are thought to exist in our distant cold solar system. At first, astronomers believed that the Kuiper belt is the first stage of periodic comets–those with orbital periods of less than 200 years. However, recent studies since the mid-1990s have proven that the Kuiper belt is dynamically stable, and the actual origin of the comet is scattered disks. the scattered disks is an active dynamic region created by the outward migration of Neptune 4.5 billion years ago, when our solar system was still in its infancy. Scattered disks something like Eris a very odd (non-circular) exercise that takes them up to 100 AU from the bright Star.
The thing that revolves inside Kuiper belt, with the cold inhabitants of the scattered disks SY Oort Cloudis called a combination trans-Neptunian objects. The most distant Oort Cloud is a thousand times more than Kuiper belt and not flat. It is also the storage of comet for a long time (those with orbits longer than 200 years), and a giant shell of ice surrounding our entire solar system–extending half of the nearest stars beyond our Sun!
Poor Pluto is the largest population of Kuiper beltand also the second largest known trans-Neptunian objects–the biggest one Eris who dances around in the scattered disks. Although originally classified as a giant planet after its discovery in the 1930s, Pluto’s status as a member of the Kuiper belt causing him to be unceremoniously banished from the pantheon of the great planets, and classified as dwarf planet in 2006. Poor Pluto is like many others KBOsand its orbital period characterizes the class of KBOs called plutinos. Plutinos the same 2:3 resonance with Neptune.
In a solar system far, far away!
The star of the new study, conducted by an international team of astronomers, is a bright member of 10 to 20 million years. Scorpius-Centaurs OB organization, which is an area very similar to the birth of our Sun. The main characteristic of the members of the association of stars is that most of them share the same characteristics. the OB The organization hosts a blazing, hot, roaring blue giant star of extraordinary class O SY B.
The bright disk-shaped dust ring observed in this study is not well focused on the star. This is a strong indication that the rings may have been formed by one or more unseen distant alien planets. Using a model of how planets are enveloped by debris disks, astronomers have found that the “eccentric” version of giant planets in the outer solar system can explain the characteristic marked by a bright ring.
“It’s almost like looking at the outer solar system when it was young,” commented Dr. Thayne Currie in May 2015. University of Cambridge Press release. Dr. Currie is the principal investigator of this research, and an astronomer at the Subaru Observatory in Hawaii. The University of Cambridge is in the UK.
the Kuiper belt It is generally thought to contain the remnants of our ancient solar system, and so there is a possibility that as the new system evolves it may look similar to our current solar system.
“Being able to directly image the birthing world of a planet around another star at the same distance as the solar system is a major advance. Our discovery of the close twin of Kuiper belt provide direct evidence that planet birth environments may be rare in the Solar System,” explained Dr. Nikku Madhusudhan in May 2015. University of Cambridge Press Release. Dr. Madhusudhan is from Cambridge Institute of Astronomy, and one of the co-authors of the paper.
The parent star of this system, known as HD 115600, was the first thing the research team found. “In a few years, I hope that the GPI will reveal more debris disks and young planets. Who knows what strange and new worlds we will discover,” said Dr. Currie to reporters.
New research will be published on The Astrophysical Journal Letters.
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