Set as Homepage - Add to Favorites

日韩欧美成人一区二区三区免费-日韩欧美成人免费中文字幕-日韩欧美成人免费观看-日韩欧美成人免-日韩欧美不卡一区-日韩欧美爱情中文字幕在线

【wife used for sex porn videos】How NASA sun probe survived flying into the corona

A NASA probe has become the first spacecraft to “touch” the sun,wife used for sex porn videos traveling into a region where the temperature is a spicy 2 million degrees-Fahrenheit.

The Parker Solar Probe flew into the star’s corona, which is its outermost atmosphere, in April. At 6.5 million miles from the sun’s surface, though, that’s the closest anything has come to the fiery orb, according to NASA.

Building instruments that could withstand the scorching heat without disintegrating — and continue taking measurements — was an engineering feat. So how did they do it without turning Parker into Icarus?


You May Also Like

Scientists at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., made and monitored one of the two exposed tools on the spacecraft. Called the Solar Probe Cup, the equipment sits outside the heat shield and catches some of the sun's plasma.

Parker entered the corona three times on April 28, at one point for five hours, and sampled particles and magnetic fields. Findings from the event were published last weekin Physical Review Letters.

The cup got so hot, it glowed red-orange like a fireplace poker at 1,800 degrees, said Anthony Case, the center’s instrument scientist. That’s a temperature on par with volcanic lava. But it never reached the millions of degrees of its environment.

The key here is understanding the difference between temperature and heat, Case said. Temperature measures how fast particles are moving, while heat is the amount of energy they transfer. 

A 100-degree day feels hot on people’s skin because lots of molecules in the air are quickly hitting their bodies, transferring heat.

“You can feel how hot, how fast they're moving. That's how we sense temperature,” he said. “But in space, there are just very, very few particles. So even though it's a million degrees, there's billions of times, or probably billions of billions of times, less particles than there are in the air on Earth.”

Empty space means fewer particles around to transfer energy and thus heat. What really increases the cup’s temperature is that it faces the sunlight, which can heat it up. 

Mashable Light Speed Want more out-of-this world tech, space and science stories? Sign up for Mashable's weekly Light Speed newsletter. By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy. Thanks for signing up!

In determining what the cup should be made of, scientists narrowed their options to a small sliver of the periodic table. The device is made of tungsten, niobium, molybdenum and sapphire — materials with high melting points. Tungsten, for example, can tolerate up to 6,192 degrees.

I want to go the rest of the way into Disney World, and I want to go meet Mickey Mouse.

For eight years, the team worked on the cup's design. At one facility in the Pyrenees Mountainsof France, scientists used thousands of mirrors to reflect sunlight and focus it into a tiny area to test the materials under superheated conditions.

Case recalled one failed test during that period involving an oven. A metal coiled around some objects was completely gone after baking.

“All we could see was a shadow of this twisted wire where it had evaporated away and left sort of a deposit on the metal that it was next to,” he said. “Needless to say, we didn't use that material anymore.”

Scientists say if the cup gets too hot during the mission, it wouldn’t melt. Just as dry ice can go from a solid to steam, the device would vaporize when exposed to the vacuum of space. That natural process is called “sublimating.”

“It actually just basically disappears,” Case said.

A 4.5-inch thick heat shield protects other instruments and electronics by keeping the spacecraft in shadow at about 85 degrees, according to NASA. The solar panels powering the probe have a simple cooling system: about a gallon of pumped deionized water that has a higher boiling point than normal. 

Parker’s mission, which launched in August 2018, is to learn how the sun and corona work. Scientists have been studying solar wind, gases flowing off the sun. So far the probe has revealed that at least some magnetic zigzags in the wind, known as "switchbacks," come from the sun's surface. Understanding the origins of the switchbacks and other aspects of solar wind could help keep astronauts, spacecrafts, and satellites safer. 

Right now, scientists don’t know how to forecast “space weather,” something that can disrupt power grids, telecommunications and GPS systems. These events don’t happen often, but a solar flare in March 1989caused all of Quebec, Canada, to experience a 12-hour power outage. It also jammed radio signals for Radio Free Europe.

SEE ALSO: NASA probe speeds through the sun's atmosphere, captures scorching photo of Mercury

During the April flyby, Parker reached 90 to 95% of the distance from Earth to the star, and it’s expected to get a heck of a lot closer. The plan is to come within 3.9 million miles of the surface.

Michael Stevens, an astrophysicist who helps monitor the cup, compared the spring encounter to driving to Disney World, stopping in the parking lot, and then getting back on the highway: The brief visit didn’t give scientists much insight into the rides.

But as the probe ventures closer, Stevens, who gets the first look at the cup’s data, considers himself the guy standing at the front of the line for Space Mountain.

“I want to go the rest of the way into Disney World, and I want to go meet Mickey Mouse,” he said. “We really were just on the doorstep of it."

0.1222s , 10181.8984375 kb

Copyright © 2025 Powered by 【wife used for sex porn videos】How NASA sun probe survived flying into the corona,Public Opinion Flash  

Sitemap

Top 主站蜘蛛池模板: 亚洲精品高清一二区久久 | 日韩经典亚洲一区二区三区 | 精品国内在视频线 | 久久国产中文字幕 | 国内精品观看视频 | 免费国产网站 | 久久久久精品免视看秋霞 | 精品久久久久久久久免费影院 | 岛国av无码| 人妻丰满熟妇av无码区hd | 思思久久99 | 真人作爱视频免费视频大全 | 国产欧美精品系列在线播放 | 少妇伦子伦精品无码 | 国产偷国产偷亚洲清高网站 | 天天综合网色中文字幕 | 亚洲日本高清成人aⅴ片 | 亚洲自拍美女 | 91精品国产手机 | 日本女人毛茸茸 | 99久久无码一区人妻a片 | 亚洲高清国产一区二区三区 | 午夜伦yy44880影院 | 亚洲欧洲日本无在线码天堂 | 精品久久一区三区二区蜜臀 | 天天爽夜夜爽人人爽88 | 欧美日韩国产系列在线观看 | 欧美日韩国产综合 | 亚洲国产精品一区二区无码 | 久久无码潮喷A片无码高潮动漫 | 亚洲熟妇无码一区二区三区导航 | 日韩一区二区三区射精 | 东京热av一区二区 | 亚洲国产精品无码久久久蜜芽 | 精品国产乱码久久久久久毛片 | 成人毛片无码一区二区三区 | 亚洲欧美制服丝腿 | 久久精品人妻无码专区 | 午夜福利免费视频 | 国产精品自在自线亚洲 | 99无码毛片网址 |