A carriage is seen near the Great Pyramids in Giza Cheap Nike Shox NZ Mens , Egypt, Sept. 22, 2017. (XinhuaMeng Tao)
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RIO DE JANEIRO, April 19 (Xinhua) -- Olympic long-jump gold medallist Maurren Maggi has announced she will retire at the end of the year.
The 38-year-old said injuries and poor form had forced her to abort her dream of competing at the 2016 Olympics in Rio de Janeiro.
"As everybody knows Cheap Nike Shox Mens , it's not always possible to do everything you want at the highest level," Maggi said during an interview with Brazilian television channel Globo on Sunday.
Maggi, who won gold at the Beijing 2008 Olympics, failed to make the final in London four years later after recovering from a hip injury.
Her last competitive event is likely to be at the Pan American Games, to be held in Toronto from July 10 to 26.
At least 50 people were killed and over 200 others wounded in a mass shooting at a concert Sunday night outside of the Mandalay Bay Hotel in Las Vegas in the U.S. state of Nevada.
The death toll, yet preliminary and tentative, would make the mass shooting the deadliest in U.S. history.
At least 50 killed in Las Vegas shooting At least 50 killed in Las Vegas shooting At least 50 killed in Las Vegas shooting At least 50 killed in Las Vegas shooting At least 50 killed in Las Vegas shooting At least 50 killed in Las Vegas shooting " A sequence of pictures shows work on developing and building the world’s largest radio telescope, with the last one (bottom right) showing the completed project after the final piece was hoisted into place in southwest China’s Guizhou Province yesterday. — Xinhua
The final piece of what will be the world’s largest radio telescope was hoisted into place yesterday in southwest China’s Guizhou Province, a landmark in mankind’s search for extraterrestrial life.
The Five-hundred-meter Aperture Spherical Telescope, or FAST, is the size of 30 football fields and yesterday saw the last of its 4,450 panels fitted into its dish in an operation that took an hour.
About 300 people, including builders Cheap Nike Air Jordan 1 Off White , experts, space enthusiasts and reporters, witnessed the installation at a karst valley in Guizhou’s Pingtang County.
Work on the 1.2 billion yuan (US$180 million) project began in 2011.
“The telescope is of great significance for humans to explore the universe and extraterrestrial civilizations,” said Liu Cixin, an award-winning science fiction writer. “I hope scientists can make epoch-making discoveries,” he said.
Zheng Xiaonian, deputy head of the National Astronomical Observatories under the Chinese Academy of Sciences Cheap Nike Presto Off White , which built the telescope, said the project had the potential to boost the global hunt for extraterrestrial life and lead to a better understanding of the origin of the universe.
He said the telescope would be the global leader for the next 10 to 20 years.
In the first two or three years, Chinese scientists will use it for early-stage research. After that, it will be open to scientists worldwide, said Peng Bo, director of the NAO Radio Astronomy Technology Laboratory. Scientists will be able to operate the telescope by remote control and make observations from other cities, such as Beijing Cheap Nike Air Max 97 Off White , which is more than 2,000 kilometers from the site, Peng said.
The telescope will dwarf Puerto Rico’s Arecibo Observatory, which is 300 meters in diameter. It will also be 10 times more sensitive than a 100-meter telescope near Bonn, Germany, he said.
“Most of the technology and materials are domestically made,” said Wang Qiming Cheap Nike Blazer Off White , chief technologist of the FAST project.
Among the seven FAST receivers, five were domestically made and another two were co-produced by Chinese, Australian and American institutions.
Radio telescopes have made major discoveries, such as pulsars, quasars and cosmic microwave background radiation. Of the 10 Nobel Prizes in physics awarded for discoveries related to cosmology and space, six were attributed to radio telescopes.
“As the world’s largest single aperture telescope located at an extremely radio-quiet site, its scientific impact on astronomy will be extraordinary Cheap Nike Air Force 1 Off White , and it will certainly revolutionize other areas of the natural sciences,” said Nan Rendong, the project’s chief scientist.
For ordinary people, perhaps the most exciting goal of FAST is the search for alien life. In two or three years, scientists could find amino acids, the foundation block of life.
There is a great chance that people will someday find life on other planets or galaxies, said Li Di Cheap Nike Air Max 90 Off White , an NAO researcher.
“FAST’s potential to discover an alien civilization will be five to 10 times that of current equipment, as it can see farther and darker planets,” said Peng.
It has been more than two decades since Chinese scientists proposed building FAST in Guizhou.
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