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China to raise retail fuel prices******
BEIJING, Oct. 22 (Xinhua) -- China will raise the retail prices of gasoline and diesel from Saturday, the country's top economic planner said Friday.
Based on recent changes in international oil prices, the retail prices of gasoline and diesel will be increased by 300 yuan (about 46.9 U.S. dollars) and 290 yuan per tonne, respectively, according to the National Development and Reform Commission.
Under the current pricing mechanism, if international crude oil prices change by more than 50 yuan per tonne and remain at that level for 10 working days, the prices of refined oil products such as gasoline and diesel in China will be adjusted accordingly.
China's three biggest oil companies, namely China National Petroleum Corporation, China Petrochemical Corporation and China National Offshore Oil Corporation, have been asked to maintain oil production and facilitate transportation to ensure stable supplies. Enditem
Tributes flow as Brazil legend Pele turns 81******
RIO DE JANEIRO, Oct. 23 (Xinhua) -- Pele marked his 81st birthday on Saturday as tributes poured in from fellow Brazilian football greats.
The former Santos and New York Cosmos star celebrated with his family at home in Sao Paulo, where he is recovering from surgery to remove a tumor from his colon.
"I take this opportunity to thank all of my friends from Brazil and all round the world who have wished me good health and happiness on my birthday," Pele said in a video posted on Instagram. "I am becoming younger, not older."
In a message accompanying the video, he wrote: "This birthday will be celebrated even more. It's 81 years of life, with many victories. And the main one is to celebrate with you. I made this video to thank everyone for the gift of receiving so much love. Thank you so much for everything!"
One of the first to acknowledge Pele's milestone was current Brazil and Paris Saint-Germain star Neymar, who posted a message on Instagram that said: "Long live the king. Congratulations".
Former striker Ronaldo Nazario published a photo of the pair embracing in the aftermath of the 2002 World Cup final, in which Brazil beat Germany 2-0 in Yokohama.
"Today is the king's day!," Ronaldo said. "When I was just a kid dreaming of being a player, he was already a world football legend. What an example! Years later, the embrace of the idol when we won our fifth World Cup. What an achievement! Congratulations, Pele. Long live the king."
Cafu, the captain of Brazil's feted 2002 side said: "May you have many more years of life. I wish you all the happiness in the world, our eternal king."
Rivaldo and Roberto Carlos, other influential members of the 2002 Brazil team, also paid homage to the only player to win three World Cups.
"Congratulations, king. I am so proud to have worn the number 10 shirt at two World Cups, where you left your legacy," Rivaldo said.
Roberto Carlos wrote: "Congratulations, Pele. Many best wishes."
Retired forward Romario, whose goals helped guide Brazil to World Cup glory in 1994, wished the football icon "much health and happiness."
"Congratulations, Pele. We are all rooting for your prompt recovery," the former Barcelona player said.
Widely regarded as one of the greatest footballers of all time, Pele scored a world-record tally of 1,281 goals in a 1,363-match professional career that spanned 21 years. He was capped 91 times for Brazil and scored 77 international goals.
The former No. 10 has battled a series of health problems over the past decade, including complications related to hip replacement surgery as well as kidney and prostate conditions. He was diagnosed with a tumor in his colon during a routine medical examination in August.
Upon his release from hospital on September 30, doctors said Pele would undergo chemotherapy, without providing details of his condition. Enditem
Space rock alert: Should you worry about an asteroid impact?
NASA is testing one technique it might use should a large asteroid threaten to collide with Earth. But just how high are the odds of such a dangerous space rock after all? You don't need to panic.
The newly-launched Double Asteroid Redirection Test, or DART, is designed to test whether hitting an asteroid with a spacecraft can alter the rock's trajectory enough to avoid a predicted collision with the Earth, given enough lead time. The DART mission will target Dimorphos, which is a satellite of a larger asteroid called Didymos. There's no chance of the pair hitting Earth no matter how the NASA probe fares, according to mission personnel.
这个被称为“双小行星重定向测试任务”（DART）的航天器，旨在测试在足够的提前期的情况下，用航天器撞击小行星是否可以改变它的轨迹，以避免与地球发生可能的碰撞。 DART 任务将瞄准一颗名为Dimorphos的小行星，它是一颗名为 Didymos 的更大小行星的卫星。据工作人员介绍，无论美国宇航局的探测器的撞击结果如何，这对小行星都不会对地球构成威胁。
So Didymos and Dimorphos don't pose a threat — but are asteroid impacts something most people need to worry about? The answer, as with many things, is "it's complicated."
所以 Didymos 和 Dimorphos 不会构成威胁——但小行星撞地球是我们普通人需要担心的吗？与许多事情一样，答案是“这很复杂”。
Countless tiny impacts
First off, the question isn't whether an asteroid will smash into the Earth: Not only has it happened before, but it happens pretty routinely.
Small rocks impact all the time — something the size of a small car hits Earth's atmosphere about once a year, according to NASA, but objects of that size burn up in the atmosphere and explode well before they hit the ground.
When this occurs, no one really notices, since these rocks cause what we call meteors — the "shooting stars" we enjoy watching on a dark, clear night. Meteors are produced by meteoroids, which are the actual pieces of asteroid that are burning up. The vast majority of meteoroids are fractions of an inch or a few millimeters across.
Once in a while, meteoroids are large enough to get deep in the Earth's atmosphere and explode; these objects are called bolides or fireballs. Occasionally a bolide will survive until close enough to Earth's surface that bystanders hear the explosion; some airblasts can damage local homes like a bomb, as happened at the Russian town of Chelyabinsk in 2013.
In general, there are a lot more small objects orbiting the sun than large ones, and the progression is roughly logarithmic — for every million sand-grain-size objects, there will be only one that weighs 2 pounds (1 kilogram), and generally there are a trillion tiny meteors for each object in the range of 2,000 pounds (1,000 kg).
A small risk of a big impact
Scientists take a variety of approaches to try to understand the relative risk of a serious asteroid impact on Earth.
Consider the most recent larger impacts. In 1908, a large asteroid or comet exploded over Siberia, triggering shock waves that flattened some 750 square miles of forest in what is dubbed the Tunguska event. The next notable impact, over Chelyabinsk, occurred about 100 years later and damaged homes as far as 55 miles (88 kilometers) away on either side of its trajectory. The Chelyabinsk impact caused some 1,200 injuries.
最近的几次产生较大影响的撞击事件有： 1908 年，一颗较大的小行星或彗星在西伯利亚上空爆炸，引发了冲击波，将大约 750 平方英里的森林夷为平地，此次流星撞击事件被称为通古斯事件。另一次较大的撞击发生在大约 100 年后，发生地在俄罗斯车里雅宾斯克，损坏了小行星坠落轨迹55 英里（88 公里）范围内的房屋，并且造成1200人受伤。
Statistics gathered by Clark Chapman at the Southwest Research Institute compare a typical American's risk of dying from various causes. Dying from a global impact, which could be smaller than that of the famous Chicxulub asteroid that ended the reign of the dinosaurs about 66 million years ago? About 1 in 75,000. The chances of dying from a regional impact that doesn't affect the entire Earth are actually smaller, about 1 in 600,000.
西南研究所的克拉克查普曼（Clark Chapman）收集的统计数据表明：一名普通的美国人死于小行星撞击地球的风险大约是75000分之一，可能比大约 6600 万年前结束恐龙统治的著名的希克苏鲁伯小行星的撞击可能性还小？死于不影响整个地球的区域性撞击的几率实际上更小，约为 600,000 分之一。
These are not large odds, but they are actually better than the chances of winning your local Powerball lottery on a specific ticket.
However, the chances of being killed in an asteroid impact shouldn't keep you up at night. Chapman, who gathered these numbers in 2007, found that an average American had 1 in 30,000 odds of dying in a plane crash and 1 in 60,000 odds of dying in a tornado; either of those fates is much more likely to be the cause of your demise than an asteroid impact.
然而，在小行星撞击中丧生的机率不应该让你夜不能寐。根据查普曼在 2007 年收集的数据，普通美国人死于飞机失事的几率为 30,000 分之一，死于龙卷风的几率为 60,000 分之一；与小行星撞击相比，这两种厄运中的任何一种都更有可能导致您的死亡。
Or consider COVID-19. Some 770,000 Americans have died of COVID-19 since the start of the pandemic, according to the Centers for Disease Control and Prevention. The population of the United States is roughly 329 million people, so over the past two years approximately 1 in 427 people have died from the virus. Clearly, COVID-19 is much more likely to kill you than an asteroid impact.
或者看看新冠疫情。根据美国疾病控制与预防中心的数据，自新冠疫情开始以来，约有 770,000 名美国人死于新冠病毒。美国人口约为 3.29 亿，因此在过去两年中，大约每 427 人中就有 1 人死于该病毒。显然，与小行星撞击相比，新冠病毒更有可能杀死您。
The bottom line: you need not worry too much about an asteroid impact compared to many other risks, but it is a longer-term problem that humanity must deal with.