郑州眼睛4.8是近视吗-【郑州视献眼科医院】,郑州视献眼科医院,郑州近视眼做手术有风险吗,郑州郑州全飞秒,郑州散光眼是怎么回事,郑州激光手术治近视眼有什么要求,郑州最新近视眼的治疗方法,郑州许昌治近视手术
郑州眼睛4.8是近视吗郑州儿童内斜视,郑州女兵近视,郑州激光治疗老花眼价格,郑州郑州做近视手术哪家好,郑州儿童假性斜视,郑州九岁男孩近视50度怎么办,郑州做近视眼手术的费用
A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.The object, nicknamed 'Oumuamua, meaning "a messenger that reaches out from the distant past" in Hawaiian, was first discovered in October 2017 by the Pan-STARRS 1 telescope in Hawaii.Since its discovery, scientists have been at odds to explain its unusual features and precise origins, with researchers first calling it a comet and then an asteroid, before finally deeming it the first of its kind: a new class of "interstellar objects."Now, a new paper by researchers at the Harvard Smithsonian Center for Astrophysics raises the possibility that the elongated dark-red object, which is 10 times as long as it is wide and traveling at speeds of 196,000 mph, might have an "artificial origin.""'Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization," they wrote in the paper, which has been submitted to the Astrophysical Journal Letters.The theory is based on the object's "excess acceleration," or its unexpected boost in speed as it traveled through and ultimately out of our solar system in January 2018."Considering an artificial origin, one possibility is that 'Oumuamua is a light sail, floating in interstellar space as a debris from an advanced technological equipment," wrote the paper's authors, suggesting that the object could be propelled by solar radiation.The paper, written by Abraham Loeb, professor and chair of astronomy, and Shmuel Bialy, a postdoctoral scholar, at the Harvard Smithsonian Center for Astrophysics, points out that comparable light-sails already exist on earth."Light-sails with similar dimensions have been designed and constructed by our own civilization, including the IKAROS project and the Starshot Initiative. The light-sail technology might be abundantly used for transportation of cargos between planets or between stars."In the paper, the pair theorize that the object's high speed and its unusual trajectory could be the result of it no longer being operational."This would account for the various anomalies of 'Oumuamua, such as the unusual geometry inferred from its light-curve, its low thermal emission, suggesting high reflectivity, and its deviation from a Keplerian orbit without any sign of a cometary tail or spin-up torques."'Oumuamua is the first object ever seen in our solar system that is known to have originated elsewhere.At first, astronomers thought the rapidly moving faint light was a regular comet or an asteroid that had originated in our solar system.Comets, in particular, are known to speed-up due to a process known as "outgassing," in which the sun heats up the surface of the icy comet, releasing melted gas. But 'Oumuamua didn't have a "coma," the atmosphere and dust that surrounds comets as they melt.Multiple telescopes focused on the object for three nights to determine what it was before it moved out of sight. 3063
A Nevada judge has denied a lawsuit filed by President Donald Trump’s re-election campaign to toss out the results of the state's presidential vote.The lawsuit was denied with prejudice, meaning that it cannot be brought back before the court. The lawsuit made multiple claims, including a problems with the voting machine that was used to count ballots, illegal voting and malfeasance by the election officials.District Court Judge James Russell said that the re-election campaign “failed to meet their burden to provide credible and relevant evidence.”READ THE DECISIONThe court also said that the “expert testimony provided by the Contestants was of little to no value.”President-elect Joe Biden received 33,596 more votes than Trump in Nevada.The Nevada Supreme Court and Gov. Steve Sisolak certified the election results last week, directing the Democratic party’s electors to cast their 6 votes for Biden.Attorney General Aaron D. Ford released a statement regarding another attempt to dismiss the 2020 election."For weeks, President Trump and his surrogates have put out tweets and participated in press releases and other media appearances to perpetuate a phony narrative that widespread voter fraud plagued Nevada's elections. Yet to date, they've provided insufficient proof to support their claims in court, which explains why they keep losing. That said, and while my office is not involved in this lawsuit, I would like to reassure every Nevadan that we take any allegations of voter fraud seriously, and we prosecute where the evidence supports credible claims. In fact, my office is currently prosecuting a claim from the 2016 election," said Attorney General Aaron D. Ford."Because I take fraud claims seriously, I have personally requested that President Trump's team, including former Attorney General Adam Laxalt, file an official complaint and supporting evidence with my office. They have yet to send in a complaint that details and provides evidence for the allegations they have publicly been making. Absent such a complaint and supporting evidence, these claims of widespread voter fraud remain baseless and, moreover, are insulting to the countless of elections workers who have diligently overseen our elections.""I would like to once again reiterate that no court has found persuasive the Trump Campaign's contentions of widespread voter fraud in Nevada and that our elections were fair and secure. This has been demonstrated time and time again and across numerous courts. This election is over. President-Elect Joe Biden and Vice-President Elect Kamala Harris won Nevada, and Nevadans can remain confident that their voices have been heard."This article was written by Joyce Lupiani for KTNV. 2729
A Philadelphia-area Dunkin' Donuts employee is accused of selling meth and heroin while in uniform, even sometimes using the store's drive-thru window for illegal activity, CBS Philadelphia reported. The Lancaster County District Attorney’s Office claims 35-year-old Nathan Wade Pizzardi was seen selling illegal drugs while on duty. Investigators told CBS Philadelphia that he was spotted in August and September selling heroin and meth. Law enforcement claims that Pizzardi would sell the drugs using the store's drive through, or sometimes would make transactions in the parking lot, while in uniform. Pizzardi has been charged with a pair of felony drug offenses, and is facing an ,000 bond. 751
A new US government report delivers a dire warning about climate change and its devastating impacts, saying the economy could lose hundreds of billions of dollars by the end of the century.The federally mandated study was supposed to come out in December but was released by the Trump administration on Friday, at a time when many Americans are on a long holiday weekend, distracted by family and shopping.David Easterling, director of the Technical Support Unit at the NOAA National Centers for Environmental Information, emphasized that there was "no external interference in the report's development." He added that the climate change the Earth is experiencing is unlike any other."The global average temperature is much higher and is rising more rapidly than anything modern civilization has experienced, and this warming trend can only be explained by human activities," Easterling said.Coming from the US Global Change Research Program, a team of 13 federal agencies, the Fourth National Climate Assessment was put together with the help of 1,000 people, including 300 leading scientists, roughly half from outside the government.It's the second of two volumes. The first, released in November 2017, concluded that there is "no convincing alternative explanation" for the changing climate other than "human activities, especially emissions of greenhouse gases."The report's findings run counter to President Donald Trump's consistent message that climate change is a hoax. On Wednesday, Trump tweeted, "Whatever happened to Global Warming?" as some Americans faced the coldest Thanksgiving in over a century.But the science explained in these and other federal government reports is clear: Climate change is not disproved by the extreme weather of one day or a week; it's demonstrated by long-term trends. Humans are living with the warmest temperatures in modern history. Even if the best-case scenario were to happen and greenhouse gas emissions were to drop to nothing, the world is on track to warm 1.1 degrees Fahrenheit.As of now, not a single G20 country is meeting climate targets, research shows.Without significant reductions in greenhouse emissions, the annual average global temperature could increase 9 degrees Fahrenheit (5 Celsius) or more by the end of this century, compared with preindustrial temperatures, the report says. 2355
A top Republican official in the area President Donald Trump is visiting Tuesday is asking him to wear a mask.The president held a campaign rally event inside an airport hangar in Winston-Salem. The campaign has said masks, hand sanitizer and temperature checks will be provided for attendees.Dave Plyler, the Republican chairman of the Forsyth County Board of Commissioners, told local media he believes Trump should wear a mask while visiting."It's been ordered by the governor," Plyler said of the state's face-covering mandate. "When in Rome, do as the Romans do. When in North Carolina, do as the governor says."Trump took the stage Tuesday evening without a mask on. While some in attendance, especially those seated directly behind Trump, wore masks, the majority did not, according to photos submitted by the Associated Press.North Carolina Governor Roy Cooper’s mask mandate is still in effect. Cooper is a democrat."He (Trump) is a citizen of the United States, but he is also a guest in our county," Plyler told the Winston-Salem Journal. "Without a mask, he could get sick, and he could blame the governor."Plyler is a supporter of the president and is pleased he is making the trip to Winston-Salem. However, he believes if Trump wore a mask, it would set the right example for other people."You know what would be neat? If before he got off the plane if he gave everybody a box of Make America Great Again masks," Plyler told CNN.The president has encouraged wearing masks and keeping socially distant during the pandemic. However, he is rarely seen in one in public.He has worn a mask on a few occasions in public, including during a visit in July to Walter Reed National Military Medical Center.North Carolina reported just over 1,000 new coronavirus cases on Monday. The state has reported a total of around 180,000 cases and 2,930 deaths. Forsyth county, where Winston-Salem is located, has reported 6,457 cases and 82 deaths from coronavirus. 1969