济南爱爱时间时长时短(济南生殖器长水痘的治疗) (今日更新中)

Astronomers looking at the atmosphere in neighboring Venus see something that might just be a sign of life.In a study published Monday, researchers from Cardiff University, MIT and elsewhere say they found the chemical signature of a noxious gas called phosphine.On Earth, phosphine is associated with life. It's found at the bottom of ponds, in badger guts and in penguin guano.Venus’ phosphine was observed in a narrow, temperate band within the planet’s atmospheres, where temperatures range from 30 to 200 degrees Fahrenheit. Scientists have speculated that if life exists on Venus, this layer of the atmosphere, or cloud deck, is likely the only place where it would survive, according to MIT.“This phosphine signal is perfectly positioned where others have conjectured the area could be habitable,” said the study’s co-author and EAPS Research Scientist Janusz Petkowski.Astronomers tried to figure out other, non-biological ways it could be produced and came up empty.“It’s very hard to prove a negative,” said Clara Sousa-Silva, research scientist in MIT’s Department of Earth, Atmospheric and Planetary Sciences (EAPS). “Now, astronomers will think of all the ways to justify phosphine without life, and I welcome that. Please do, because we are at the end of our possibilities to show abiotic processes that can make phosphine.”Outside experts — and the study authors themselves — say the research is tantalizing but not yet convincing. 1454

As we drive down the eerily deserted Hong Kong-Zhuhai-Macau Bridge, the murky waters of the Pearl River Delta stretch as far as the eye can see. There is no land in sight.Spanning 34 miles (55 kilometers), this is the longest sea-crossing bridge ever built. Guo Xinglin, assistant director and senior engineer at the Hong Kong-Zhuhai-Macao Bridge Authority, meets us half way along. As we are buffeted by a strong wind, the tough conditions his construction crew experienced, as they perched on precarious platforms, working miles from land and high over the water, are evident.Guo is visibly proud of his country's monumental achievement. 647

Astronauts on board a Soyuz rocket heading to the International Space Station survived an emergency landing following a booster failure, a Russian space official said Thursday."The crew landed," Dmitry Rogozin, director of the Russian space agency Roscosmos, said on Twitter. "All are alive."The rocket was transporting NASA astronaut Nick Hague and cosmonaut Alexey Ovchinin of Roscosmos for a six-month stay on the ISS.NASA said its support teams had reached the location where the crew touched down."The search and rescue teams have reached the Soyuz spacecraft landing site and report that the two crew members are in good condition and are out of the capsule," NASA tweeted.The pair will be taken to the Gagarin Cosmonaut Training Center in Star City, outside the Russian capital, Moscow, NASA said.  818

As millions of Americans head to the polls today for the last day of voting, a group of artists has been deployed to help them pass the time.With a strum of her bow, violinist Paula Johannessen is off.“Some poll workers were really excited, too, that they were just happy to hear music,” said Johannessen.But today, her performance is dedicated to the American voter.“I played a lot of Irish music so far, and I'll continue to some jigs reels and waltzes,” she said.It’s called Play for the Vote, a non-partisan effort by artists and performers to bring music to the ballot box.“It's nice to remind people that we are still here, we're still performing, we're still here to share what we have with everybody,” explained Johannessen.Boston-based cellist Mike Block came up with the idea after the contentious first presidential debate.“I was just kind of thinking about what the candidates were saying about, not just who you should vote for, but the stress around the process of voting itself,” said Block.With long lines, health concerns, and the fate of the country hanging in the balance, Block decided musicians could help ease the anxiety.“I think it's also this is going to serve a very important need for audiences, said Block.“Music has this unique power to create shared unifying experiences and we haven't really had that this year.”He recruited 600 musicians to perform classical, folk, bluegrass, jazz, rock and more without a political leaning. They will play in 48 states and the District of Columbia. All of it is for voters stuck in long lines, fulfilling their civic duty.“It's always been a melting pot of music, as well as cultures here, and it's really cool just to be able to communicate with anyone anywhere through music,” said Johannessen.“I think encountering this at a voting location is really going to remind people of the culture and all of the things that bring us together in society,” said Block.It’s a good reminder of what we have in common today, no matter who we vote for. 2016

At least 36 people have been confirmed dead as a result of Hurricane Michael, according to authorities.The number rose Saturday after a local medical examiner confirmed the death of a woman in Bay County, Florida, bringing the death toll in Florida alone to 26.Authorities did not offer additional details on the death. 327

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