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[/news/china/index.html China] has landed its secretive reusable experimental spacecraft back on Earth after a successful two-day test flight.  <br>Long March-2F carrier was launched into orbit last Friday from Jiuquan Satellite Launch Centre in the northwestern Chinese region of Inner Mongolia.<br>It returned to the scheduled landing site as planned on Sunday, the official state-run Xinhua News Agency reported.  <br>The reusable experimental spacecraft, of which no pictures have emerged, was launched to test 'reusable technologies' during its flight and could lead to a 'convenient and inexpensive way' to reach space. <br>        A Long March-2F carrier delivered the spacecraft into orbit from Jiuquan Satellite Launch Centre in north-western Chinese region Inner Mongolia,  [https://www.kynghidongduong.vn/tours/du-lich-trung-quoc-gia-re/ kynghidongduong.vn] reported state media Xinhua.<br><br>The file picture shows a modified model of the Long March CZ-2F rocket carrying the unmanned spacecraft Shenzhou 8 taking off from northwest China on November 1, 2011<br>'China's reusable experimental spacecraft on Sunday returned to the scheduled landing site after a two-day in-orbit operation,' said Xinhua. <br>'The successful flight marked the [http://www.broowaha.com/search/country%27s country's] important breakthrough in reusable spacecraft research and is expected to offer convenient and low-cost round trip transport for the peaceful use of the space.'  <br>Orbital data later confirmed that the vehicle had been placed in an orbit at a similar height to China's previous crewed flights, [ ] reports. <br>The 'space plane' could take Chinese astronauts to and from China's planned future space station. <br>'A space plane is an ideal technology for atmospheric re-entry due to less brutal accelerations for the human body,' said Shenzhen-based space analyst Jean Deville. <br>The mission appears to have been carried out with low-key preparations and high-level security, and the specifics of the spacecraft are yet to be revealed. <br>No images of the spacecraft or its lift-off have yet to be released, and staff and visitors at the launch site were prevented from filming or discussing the project online, according to reports. <br>A copy of an official document circulated online warned people not to film on the launch site or discuss the project online, according to [ ].<br>The official memo read: 'All units should strengthen personnel security education and personnel management during missions to ensure that there is no leakage of secrets.' <br>   RELATED ARTICLES  [# Previous] [# 1] [# Next]    [/news/article-8380225/China-says-carry-Mars-exploration-July-August.html  China says it will carry out its first Mars exploration in...] [/news/article-8697557/Taiwan-denies-shooting-Chinese-Su-35-fighter-jet-footage-shows-crashed-plane-fire.html  Taiwan denies shooting down a Chinese Su-35 fighter jet...] [/news/article-8697279/UN-experts-raise-concerns-Hong-Kong-security-law.html  China warns UN to stop 'meddling' in its affairs after human...] [/news/article-8693575/Chinese-school-brings-infantry-fighting-vehicle-teach-pupils-patriotism.html  Chinese school brings an infantry fighting vehicle packed...]    <br><br><br><br>Share this article<br>Share<br>23 shares<br><br><br>A Chinese military source suggested that the Chinese spacecraft was similar to the X-37B, a reusable robotic spacecraft launched by the US Air Force.<br><br>The file picture taken in April, 2010 shows X-37B Orbital Test Vehicle in the encapsulation cell at the Astrotech facility in Titusville<br>A Chinese military source confirmed the authenticity of the notice to the Hong Kong newspaper and [https://www.kynghidongduong.vn/tours/du-lich-trung-quoc-gia-re/ tour trung quốc] said: 'There are many firsts in this launch. <br>'The spacecraft is new, the launch method is also different.<br><br>That's why we need to make sure there is extra security.' <br>The source also suggested that the Chinese spacecraft was similar to the X-37B, a reusable robotic spacecraft launched by the US Air Force.<br>Also known as the Orbital Test Vehicle, the US's unmanned spacecraft takes off vertically and returns to the Earth horizontally on a runway landing.<br>The Boeing-made space plane has flown four secret, long-duration missions in Earth orbit to date. <br>       On July 23, China launched its Tianwen-1 spacecraft (pictured) to Mars, which is due to arrive on the Red Planet next February after a seven-month, 34-million-mile voyage<br>         A Long March-5 rocket carrying an orbiter, lander and rover as part of the Tianwen-1 mission to Mars, blasts off from the Wenchang Space Launch Centre on July 23 in Hainan, China<br>China revealed back in 2017 that it's planning to launch a spacecraft in 2020 that can fly like an aircraft and would be reusable, increasing the frequency of launches and lowering mission costs.<br>Last year, it became the first country to land a robot rover on the moon's little-seen far side, and in July this year launched its robot rover to Mars.    <br>The Tianwen-1 is due to arrive on the Red Planet next February after a seven-month, 34-million-mile voyage.<br>The unmanned space probe took off aboard a Long March 5 Y-4 carrier rocket on July 23 from Wenchang Space Launch Centre on the southern island province of Hainan, China.<br>The craft, which consists of an orbiter, lander and rover, measures just over six feet in height (1.85m) and weighs 530 pounds (240kg).<br>It will survey the composition, types of substance, geological structure and meteorological environment of the Martian surface, and look for signs of alien life. <br>The launch of Tianwen-1 in July was sandwiched by the launch of two other missions to Mars by the US and the UAE. <br>       <div class="art-ins mol-factbox sciencetech" data-version="2" id="mol-16bf2c70-f0f6-11ea-90d8-2354a27838a7" website quietly lands its ultra-secret experimental spacecraft
+
[/news/coronavirus/index.html Coronavirus] was likely spreading in much of the U.S.<br>last December - weeks before China told the officially recognized the new virus, a new study suggests. <br>Blood collected by the Red Cross between December 13 and January 17 was later sent to the Centers for Disease Control and Prevention ([/news/centers-for-disease-control-and-prevention-cdc/index.html CDC]) to be tested for antibodies to coronavirus. <br>Testing revealed antibodies to the virus that causes COVID-19 in 39 samples from blood donated between December 13 and December 16.<br><br>Those donations were made in [/news/california/index.html California], Oregon, and Washington. <br>Another 67 samples taken between December 30 and January 17 from donors in the Midwest and Northeast were positive for antibodies, according to the Wa[# <br><br><br><br>Previous][# Previous] [# 1] [# Next]    [/health/article-9005605/Almost-county-America-coronavirus-hotspot-government-map-reveals.html  How USA has become one giant hotspot: 1,172 Americans are...] [/health/article-9002605/More-ONE-children-coronavirus-NO-symptoms-infection.html  More than ONE-THIRD of children with coronavirus have NO...]    <br><br><br><br>Share this article<br>Share<br><br><br>The first U.S. case of coronavirus was not reported until January 19.  <br>It was only 12 day earlier, on January 8, that the World Health Organization (WHO) said the bizarre pneumonia [http://www.bing.com/search?q=sickening%20people&form=MSNNWS&mkt=en-us&pq=sickening%20people sickening people] in China was likely caused by an altogether new virus.  <br>Chinese authorities have notified the WHO of a cluster of unexplained illnesses on December 31.  The virus was isolated and its genetic makeup was sequence by January 7. <br>At that time, both the Chinese government and the WHO were urging calm, insisting that the virus was only spreading from people who had symptoms and did not pose a major threat to people outside China's Hubei Province. <br>Even the first case identified in the U.S.<br><br>- in a Washington state man who had recently returned from China - was not an indication that coronavirus was going to take hold in the U.S., officials said at the time. <br>We now know that it already was taking hold. <br>Previous genetic sequencing studies have shown that coronavirus was likely already on both coasts of the U.S.<br><br>by mid- to late-January, starting to circulate in broader communities in February. <br>But testing of blood donated to the Red Cross confirms what the studies of coronavirus genomes suggested: COVID-19 was here, long before Americans knew it. <br>The new study, published in the journal Clinical Infectious Diseases, tested samples from 7,389 blood donations for [https://www.kynghidongduong.vn/tours/tour-thai-lan-bangkok-pattaya-5-ngay.html tour thái lan giá rẻ] antibodies to the virus. <br>         <br>        <br>         <br>Antibodies were present in 106 - 1.4 percent - of the donations collected between mid-December and mid-January. <br>The use of antibodies to assess how prevalent the virus is has been questioned. <br>Antibodies fade over time, with some studies suggesting that they become undetectable within two or three months of infection.  <br>There is also the possibility that blood could react to testing if someone had antibodies to one of the hundreds of other types of coronaviruses in the environment. <br>But 90 of the Red Cross samples were tested for antibodies very specific to SARS-CoV-2 - immune proteins that the scientists had made sure were not cross-reactive with test for other coronaviruses. <br>Of the 90, 84 samples were positive for these very specific antibodies. <br>In the batch of samples taken from later blood donations - made between December 17 and December 30, the scientist found that 67 were positive for coronavirus antibodies. <br>These samples came from donors in Massachusetts, Michigan, Wisconsin or Iowa and Connecticut or Rhode Island. <br>So not only was coronaviru already on the West Coast before the first U.S.<br><br>case was confirmed there,  [https://www.kynghidongduong.vn/tours/tour-thai-lan-bangkok-pattaya-5-ngay.html tour thái lan giá rẻ] it was already in states on the other side of the country before the Washington patient was identified. <br>President Trump was perhaps the most promise voice in a chorus that blamed China for 'covering up' the severity of the coronavirus outbreak in the early days of the pandemic's global spread. <br>China's Communist Party has a poor track record for disease outbreaks and  [https://www.kynghidongduong.vn/tours/tour-thai-lan-bangkok-pattaya-5-ngay.html tour thái lan giá rẻ] transparency.   <br><div class="art-ins mol-factbox health" data-version="2" id="mol-b6d07180-341a-11eb-8974-6f898e53e517" website was spreading in the US by December 17, study finds

Revision as of 07:10, 31 December 2020

[/news/coronavirus/index.html Coronavirus] was likely spreading in much of the U.S.
last December - weeks before China told the officially recognized the new virus, a new study suggests. 
Blood collected by the Red Cross between December 13 and January 17 was later sent to the Centers for Disease Control and Prevention ([/news/centers-for-disease-control-and-prevention-cdc/index.html CDC]) to be tested for antibodies to coronavirus. 
Testing revealed antibodies to the virus that causes COVID-19 in 39 samples from blood donated between December 13 and December 16.

Those donations were made in [/news/california/index.html California], Oregon, and Washington. 
Another 67 samples taken between December 30 and January 17 from donors in the Midwest and Northeast were positive for antibodies, according to the Wa[#



Previous][# Previous] [# 1] [# Next] [/health/article-9005605/Almost-county-America-coronavirus-hotspot-government-map-reveals.html How USA has become one giant hotspot: 1,172 Americans are...] [/health/article-9002605/More-ONE-children-coronavirus-NO-symptoms-infection.html More than ONE-THIRD of children with coronavirus have NO...]



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The first U.S. case of coronavirus was not reported until January 19.  
It was only 12 day earlier, on January 8, that the World Health Organization (WHO) said the bizarre pneumonia sickening people in China was likely caused by an altogether new virus.  
Chinese authorities have notified the WHO of a cluster of unexplained illnesses on December 31.  The virus was isolated and its genetic makeup was sequence by January 7. 
At that time, both the Chinese government and the WHO were urging calm, insisting that the virus was only spreading from people who had symptoms and did not pose a major threat to people outside China's Hubei Province. 
Even the first case identified in the U.S.

- in a Washington state man who had recently returned from China - was not an indication that coronavirus was going to take hold in the U.S., officials said at the time. 
We now know that it already was taking hold. 
Previous genetic sequencing studies have shown that coronavirus was likely already on both coasts of the U.S.

by mid- to late-January, starting to circulate in broader communities in February. 
But testing of blood donated to the Red Cross confirms what the studies of coronavirus genomes suggested: COVID-19 was here, long before Americans knew it. 
The new study, published in the journal Clinical Infectious Diseases, tested samples from 7,389 blood donations for tour thái lan giá rẻ antibodies to the virus. 



Antibodies were present in 106 - 1.4 percent - of the donations collected between mid-December and mid-January. 
The use of antibodies to assess how prevalent the virus is has been questioned. 
Antibodies fade over time, with some studies suggesting that they become undetectable within two or three months of infection.  
There is also the possibility that blood could react to testing if someone had antibodies to one of the hundreds of other types of coronaviruses in the environment. 
But 90 of the Red Cross samples were tested for antibodies very specific to SARS-CoV-2 - immune proteins that the scientists had made sure were not cross-reactive with test for other coronaviruses. 
Of the 90, 84 samples were positive for these very specific antibodies. 
In the batch of samples taken from later blood donations - made between December 17 and December 30, the scientist found that 67 were positive for coronavirus antibodies. 
These samples came from donors in Massachusetts, Michigan, Wisconsin or Iowa and Connecticut or Rhode Island. 
So not only was coronaviru already on the West Coast before the first U.S.

case was confirmed there, tour thái lan giá rẻ it was already in states on the other side of the country before the Washington patient was identified. 
President Trump was perhaps the most promise voice in a chorus that blamed China for 'covering up' the severity of the coronavirus outbreak in the early days of the pandemic's global spread. 
China's Communist Party has a poor track record for disease outbreaks and tour thái lan giá rẻ transparency.   
<div class="art-ins mol-factbox health" data-version="2" id="mol-b6d07180-341a-11eb-8974-6f898e53e517" website was spreading in the US by December 17, study finds