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, Nov. 5 (Xinhua) -- An international team of astronomers discovered emission from clouds of cold cosmic dust surrounding the Earth-sized temperate world Proxima b, discovered in 2016 and the closest planet to the Solar System, and believed there may be more hidden planets yet to find.
"The dust around Proxima is important because, following the discovery of the terrestrial planet Proxima b, it's the first indication of the presence of an elaborate planetary system, and not just a single planet
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, around the star closest to our Sun," Guillem Anglada, the lead author of the new study, was quoted as saying in a news release.
Dust belts are the remains of material that did not form into larger bodies such as planets. The particles of rock and ice in these belts vary in size from the tiniest dust grain, smaller than a millimetre across, up to asteroid-like bodies many kilometres in diameter.
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, the closest star to the Sun, is a faint red dwarf lying just four light-years away in the southern constellation of Centaurus (The Centaur).
According to the new Atacama Large Millimeter Array (ALMA) observations, detailed in a study to appear in Astrophysical Journal Letters, dust appears to lie in a belt that extends a few hundred million kilometres from Proxima Centauri and has a total mass of about one hundredth of the Earth's mass. This belt is estimated to have a temperature of about -230 degrees Celsius, as cold as that of the Kuiper Belt in the outer Solar System.
There are also hints in the ALMA data of another belt of even colder dust about ten times further out. If confirmed, the nature of an outer belt is intriguing
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, given its very cold environment far from a star that is cooler and fainter than the Sun. Both belts are much further from Proxima Centauri than the planet Proxima b, which orbits at just four million kilometres from its parent star.
Co-author Pedro Amado from the Instituto de Astrofísica de Andalucía (CSIC), Granada, Spain, explains that this observation is just the start.
"These first results show that ALMA can detect dust structures orbiting around Proxima. Further observations will give us a more detailed picture of Proxima's planetary system. In combination with the study of protoplanetary discs around young stars, many of the details of the processes that led to the formation of the Earth and the Solar System about 4600 million years ago will be unveiled. What we are seeing now is just the appetiser compared to what is coming!" Amado explains the implications of the discovery.
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, Nov. 1 (Xinhua) -- The British manufacturing sector continued its run of robust growth in October, benefiting from improved economic conditions globally.
The MarkitCIPS purchasing managers' index (PMI) for October rose from September's 56.0 to 56.3, continuing an unbroken 15-month run of growth.
Markets and experts had expected a slight decline to 55.9, and the PMI figure released on Wednesday is above the long-term trend for this set of data.
Production and new order volumes continued to rise at robust rates, as companies benefited from rising inflows of new export business and strong domestic market conditions. The new orders index rose to 57.7 from 56.6 in September.
The domestic market was the prime source of new contract wins, although new export business also continued its history of growth.
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, chief UK economist with data analysis firm Pantheon Macroeconomics, told Xinhua: "Developed economies are seeing a rebound in global trade flows and the UK is benefiting from that, being quite an open economy."
Companies saw improved intakes of new work from clients in the USA, mainland Europe, South America and Australia, in some cases aided by the sterling exchange rate.
Sterling has fallen substantially since the Brexit referendum vote
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, dropping from 1.48 U.S. dollars to 1.33 U.S. dollars on Wednesday.
"Sterling has weakened a lot in the last couple of years and that has now filtered through to the manufacturing sector," said Tombs.
However, the figures reveal a mixed benefit, with the sector growing because of global conditions but still lagging the growth of other developed economies.
Tombs said: "If you look at the UK's manufacturing sector compared to the eurozone, it is lagging behind, because of a slowdown in UK economic growth."
Time is money in virtually any a business but when you find yourself talking about an online marketing business
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, it can really amount to a good little bit of money if you don't take the time for you to plan. The following advice were written to assist you in your affiliate marketing venture.
One of the things that can be done in order in order to effectively market your products from the internet is giving away freebies. Submit your giveaways to online directories that may make it possible for other people to find out and hear in relation to them. This is one method by which you could start advertising your items. Set up your web site so that shoppers who do not need multimedia presentations or maybe allow flash running scripts, still have entry to meaningful content. While most folks do have broadband service currently, some do not really or are browsing on mobile phones. They will really appreciate a straightforward, but effective web site, especially when they can't need all the special features.
When it relates to Internet marketing, it is better to avoid overt revenue talk. One of the quickest approaches to drive your site visitors away is by being seen as a pushy store assistant. Instead
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, provide valuable information for your visitors that makes it possible for them to buy on their personal terms. For example, a high quality overview of a product that will outlines the pluses and minuses will allow someone to end up buying it .
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