焦作复读学校专业联系电话(濮阳高三重读实力升学率) (今日更新中)

The NASA SpaceX Crew Dragon took off into the sky over the weekend. It was SpaceX’s first crewed mission in history. For some, it seemed like a pipe dream. But the launch’s success crested a renewed sense of hope for the future of the industry.“It’s one of those things where any success in the commercial space realm is beneficial to all of the players in that realm,” Dave Ruppel explained. Ruppel is the Director at the Colorado Air and Space Port, one of the 12 licensed spaceports in the U.S. approved for launching spacecraft.He said successful events like this help build interest and trust with the public. “Things like the SpaceX launch kind of bring the average person into that discussion, and help them realize how much is happening out there,” Ruppel said. “Now we know it’s going to be safe. We know it can be successful.”And it could create more opportunities for the general public to experience space. “Their goal is to make that a possibility more for the average person, not the superhuman NASA astronaut,” Ruppel said. Space travel has come a long way, from historical milestones to a possible vacation destination. “When you get into the 1960s and people actually start going into space, there are thoughts about how we might create some kind of place where people could go and visit,” said Jennifer Levasseur, Museum Curator at the Smithsonian National Air and Space Museum. “Fantasies about space hotels or the future of space travel.”She said while more commercial trips are possible in the future, there are some factors to consider. One of those factors is price. “Even a flight on the least expensive means...is really pricey,” Levasseur said. “This is definitely an elite thing.”And then there is safety to consider. “Putting a person on top of that vehicle really complicates that scenario, it ups the risk factor,” she said. “For somebody to just buy a ticket and go there, there needs to be a different level of security with that.” Space Adventures is one of the private companies offering those trips. “Space flight is not a risk-free endeavor,” said Tom Shelley, President of Space Adventures. “We arranged for the very first fair paying private individual flight to space. That was Dennis Tito in 2001,” he explained. They offer a multitude of adventures. They offer suborbital flights that give participants five minutes in space for a price in the six figure category, to flights a couple hundred miles above the earth for multiple days, which costs a prettier penny. “It’s going to remain in the multi-millions, probably in the tens of millions of dollars in the foreseeable future,” Shelley said. “And that’s just to do with the pure physicals of what is involved.” He said as flights become more frequent, prices may come down. But that probably won’t happen anytime soon. “This was a big milestone. It’s been a long time coming. The SpaceX Dragon was conceived originally as a vehicle fair paying individuals would eventually be able to fly on,” Shelley explained. As scientists and visionaries bring us closer to the final frontier, the idea of space tourism still raises a lot of questions. “Every time we’re successful, we build on that confidence that we want people to have in the activities. It’s the same thing that’s happened over years in aviation. And today we are all very comfortable with going and taking a flight anywhere in the world,” Ruppel said.“It’s going to be a little while I think still, until we see legitimate what we think of as space tourism,” Levasseur said.  3549

A flight attendant on a United Express plane was charged with public intoxication after passengers complained about her behavior on the flight.According to the 172

SAN LUIS OBISPO, Cali. – It’s harvest time on California’s Central Coast and winemaker Jean-Pierre Wolff has seen a big drop in production since last year. “This year, the harvest is below average,” he said. “Some of my older vines did suffer from salt toxicity and have been steadily declining.” Wolff owns and operates the award-winning Wolff Vineyards. He says climate change is affecting his grapes and that he has the records to prove it. “Absolutely, I have my lab book where I describe extensively the harvest and the sugar levels of the grapes,” he said. “So, definitely I see these changes.” Wolff says the changes are linked to extreme weather like longer droughts, hotter summers and milder winters. “I’ve been farming here for 20 years,” he said. “Years ago, I didn’t have to worry about sunburns on my grapes, now I do.” Less rain means more reliance on irrigation, which Wolff says is cutting into his and other wineries’ bottom lines. “If you take the Central Coast, which is defined from the Bay Area to Ventura County, 86% of the water use is from ground water extraction,” he said. “So clearly, that’s not sustainable if we have to offset.” At nearby California Polytechnic State University San Luis Obispo, they have a growing viticulture program. Cal Poly professor Federico Casassa, Ph.D. says climate change is altering wine agriculture across the world. “Heatwaves are extremely pervasive not just in California but in Australia, in South America, and increasingly in Europe as well,” he said. Despite the impact, Casassa says climate change doesn’t mean doomsday for the wine industry. “My point is global warming and climate change are a reality,” he said. “But the effect that we see on grapes is not only due to global warming, it’s due to the fact that we grow better grapes." Now, Casassa is teaching better and more sustainable practices to viticulture students saying sustainability is not a destination but rather a journey. "Climate change is here and global warming is part of climate change,” he said. “But we are going to adapt.” Adapting, just like Wolff is doing. “I’m sort of here trying to beat the clock so to speak,” he said. To help protect his harvest, Wolff is now replanting a big portion of his vineyard and watering them with a new type of subsurface irrigation. “Instead of irrigating above ground through this drip line I connect with a little spaghetti hose and this pipe goes 3 feet below ground to the root zone,” he said. And while he might not be able to change the climate, Wolff does plan on changing his practices. 2608

A magnitude 6.5 earthquake has struck Idaho, with the reported epicenter 100 miles northeast of the state's capital of Boise, the USGS reported on Tuesday.The earthquake was centered in remote, mountainous areas of Idaho, but could be felt in Boise and in other areas of the state. The earthquake was also reportedly also felt in Utah and Montana. Tuesday's earthquake marked the largest in Idaho since the Borah Peak earthquake of 1983. 449

A controversial mural depicting images of slavery and dead Native Americans at a San Francisco high school will be left in place but covered with solid panels.The San Francisco Unified School District Board of Education voted 4-3 to cover the "Life of Washington" mural at George Washington High School without destroying it.The vote on Tuesday amends a June decision to paint over the mural "unless doing so would result in undue delay," the school district said in a news release.The mural was created in 1935 by Victor Arnautoff and has stirred controversy because of depictions such as enslaved Africans working in cotton fields on George Washington's estate and white settlers stepping over the body of a dead Native American, according to a fact sheet posted on the school district's website."Where we all agree is that the mural depicts the racist history of America, especially in regards to African Americans and Native Americans. It is important that we all share the agreement and acknowledgement of racism, discrimination, and the dehumanizing of people of color and women in American history," SFUSD President Stevon Cook said in a press release.The mural will no longer be on public view at the school but will be digitized so that art historians can access it. 1287

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