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幸运飞艇彩票NASA“卡西尼号”在土星卫星土卫六上发现降雨

NASA’s Cassini spacecraft spotted fresh rainfall on Saturn’s moon Titan

NASA“卡西尼号”土星卫星土卫六上发现降雨

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NASA’s Cassini orbiter has been dead for well over a year now, but its incredible discoveries continue to trickle in as researchers pore over data and images it collected while it was active.

NASA的“卡西尼号探测器已经自毁一年多了,但是当研究人员仔细研究“卡西尼号”服役时收集的数据和图像时,令人难以置信的发现陆续呈现。

Consequently, studies focused on the orbiter’s findings continue to crop up on a regular basis, such as a recent study from University of Idaho in Moscow doctoral student Rajani Dhingra, who, along with her colleagues, found evidence of rainfall on the north pole of Saturn’s largest moon, Titan, in an image taken on June 7th, 2016. This indicates that summer had arrived on the moon’s northern hemisphere later than climate models had predicted.

专注于探测器发现的研究仍在定期进行,比如莫斯科爱达荷大学的博士生拉贾尼·丁格拉最近的一项研究。她和同事们2016年6月7日由“卡西尼号”拍摄的一张照片中,发现了土星最大卫星土卫六北极降雨的证据这表明土卫六北半球夏季到来的时间比气候模型预测的要晚。

“The whole Titan community has been looking forward to seeing clouds and rains on Titan’s north pole, indicating the start of the northern summer, but despite what the climate models had predicted, we weren’t even seeing any clouds,” said Dhingra, lead author of the study. “People called it the curious case of missing clouds.”

该研究报告的第一作者丁格拉:“都在期待看到土卫六北极的云和雨,这预示着北方夏季的开始。但是,尽管气候模型预测到了这些,我们甚至没有看到任何云。人们称失踪的云团。”

Dhingra and her colleagues spotted a reflective feature near the north pole of Titan in the aforementioned image — a feature which covered approximately 46,332 square miles — which had never appeared before, and didn’t appear when Cassini passed by again. Dhingra concluded that the reflective nature of the feature was due to sunlight reflecting off of a wet surface, which she believes was the result of a methane rainfall event.

丁格拉和她的同事在上述图片中发现了土卫六北极附近的一个反射特征,覆盖了大约46,332平方英里,以前从未出现过,当“卡西尼号”再次经过时也没有出现过。丁格拉总结说,这一特征的反射性质是由于阳光反射潮湿表面,她认为这是甲烷降雨导致的

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This is the first time summer rainfall has ever been observed on Titan. While Earth experiences four seasons over the course of a year, a single season on Titan lasts seven Earth years. When Cassini reached Titan, clouds and rainfall were observed in the southern hemisphere, signaling a southern summer. Climate models predicted the rain would move to the northern hemisphere “leading up to the northern summer solstice in 2017,” but the clouds still hadn’t appeared by 2016. The images above should help reseachers understand why this was the case.

这是首次在土卫六上观测到夏季降雨。地球一年经历四个季节,而土卫六上的一个季节可以持续7个地球年。当卡西尼号到达土卫六时,在南半球观测到了云层和降雨,这预示着南半球的夏季即将到来。气候模型预测,降雨将转移到北半球,预示着“2017年北半球夏至”,但云层到2016年仍未出现。上面的图片应该可以帮助研究人员理解为什么会发生种情况

We want our model predictions to match our observations. This rainfall detection proves Cassini’s climate follows the theoretical climate models we know of,” Dhingra said. “Summer is happening. It was delayed, but it’s happening. We will have to figure out what caused the delay, though.”

我们希望我们的模型预测与观察相匹配。这次发现降雨迹象证明“卡西尼号”观测到的气候符合我们所知的理论气候模型。“土卫六上的夏季正在到来,只是推迟了。不过,我们必须找出造成延误的原因。(文章译自雅虎)

幸运飞艇彩票雅虎读者评论:

译文来源:幸运飞艇 /46892.html   译者:Jessica.Wu

CJA23 hours ago

These articles are reminders that the human race can achieve amazing things when our focus is science

文章提醒我们,当我们专注科学时,人类可以取得惊人的成就

 

Choupique4 hours ago

Raining methane? Imagine being there and striking a match to see where you're at.

下雨甲烷?想象一下,如果在那里划一根火柴会怎样

 

Richard4 hours ago

I bet that Methane is cold !

我打赌甲烷是冷的!

 

Chris10 hours ago

Nice to have evidence that backs a prediction.

很高兴看到有证据支持预测。

 

W11 hours ago

Condensed flocky methane falling to the ground is not "rain" and never was, at least not on this Earth.

凝结的絮状甲烷落到地面上根本不是“雨”,从来都不是,至少在地球上不是。

 

James4 hours ago

No they are mistaken. Cassini was built with some Japanese transmission parts which failed while the orbiter was approaching Titan

“卡西尼号”是用一些日本的传动部件建造的,接近土卫六时发生了故障

 

Jan2 hours ago

cool....

太酷了

 

Mark2 hours ago

President Trump has canceled a trip until the rain clears up.

特朗普总统取消了行程,直到雨停。

 

Burning2nd3 hours ago

hOW does liquid stay liquid that far from the sun... I think "its raining" is a little misleading

在离太阳那么远的地方液体是如何保持液态的…我认为说是在“下雨”有点误导人

 

Bitis_Gabonica52 minutes ago

University of Idaho in Moscow... I had to look that up. Sure enough it's in Moscow, Idaho. I could have so much fun with an address there!

位于莫斯科爱达荷大学…我查一下位于爱达荷州的莫斯科。

 

B Randal3 hours ago

I love the misleading title, rainfall and then in the article they really have no idea what they are observing and they THINK it is METHANE rainfall. Why does anyone believe science any more. BEWARE OF SCIENCE FALSELY SO CALLED.

这个标题误导人,他们根本不知道自己观察到的是什么,他们以为这是甲烷雨。为什么人们不再相信科学了?谨防伪科学。

 

Bashin Time4 hours ago

wow, look at that awesome CGI of fake space!......NASA has the best cartoons!...….(nobody believes your fake moon landing anymore)

电脑制作的图片,这个NASA最擅长了,没人再相信你们伪造的登月。

 

Michael s3 hours ago

Its gotta be the result of man made climate change.

这一定是人为导致的气候变化。

 

puddintane6 hours ago

... and its Antarctic water that burst into steam because of global warming

由于全球变暖南极的水变成蒸汽

 

ronald1 hour ago

Oh, Methane... Yeah I thought it might be a little too cold there for liquid water.

甲烷,但我想那里可能太冷了,没有液态水。

 

Mangez Ma Merde1 hour ago

Trump was going to visit Titan to honor America's war dead, but canceled when someone told him it rains methane on Titan.

特朗普原本要去土卫六纪念幸运飞艇彩票的战争亡灵,但当有人告诉他土卫六上有甲烷雨时,他取消了行程。

 

Tommy Boy3 hours ago

Sure they did. We can't find a missing jumbo jet on earth but they claim to know it's raining on a distant planet or one of their moons.

在地球上我们找不到失踪的大型喷气式科技,但他们声称知道一个遥远的星球上下雨。

 

Dimitz1 hour ago

There's nothing more refreshing than liquid methane.

没有什么比液态甲烷更提神的了。

 

NickD2 hours ago

They don't know its rain, they are concluding it is rain.

他们不知道这是不是雨,他们只是断定是下雨了。

 

M4 hours ago

Okay, all planets had life (organisms). If they were too close to the sun. Done...too far away, froze. Ta-da

所有的行星都有生命(有机体)。如果离太阳太近,存活不下来,离得太远了,又都冻住了。哈哈

 

Black Tear16 minutes ago

Which means nothing, SImply because there is water does not mean there is life, I think people need to understand that, Just because it is required for earth, donset mean it is for other planets.

这并不意味着什么,仅仅因为有水并不意味着有生命我认为人们需要理解这一点,水是地球所必需的,不意味着水是其他星球所必需的。

 

James E7 hours ago

Walking in a me-thane rain....sounds so ramantic

甲烷雨中漫步,听起来很浪漫

 

Catorce144 hours ago

Yes, there might be unusual beings there. But probably not the kind that progressives can mate with.

那里可能有不寻常的生物。但可能还没进化到可以与之合作的水平

 

k46 minutes ago

I thought Methane came from Uranus

我原以为甲烷来自天王星

 

TeeitupAB3 hours ago

Run for your lives!! It's raining arrows!

逃命吧!!下箭雨了!

 

Let It Ride2 hours ago

AAH, nothing smell better than fresh Methane.

没有什么比甲烷更好闻的了。

 

Rob1 hour ago

Sadly this will be buried by political news.

不幸的是,这报道将被政治新闻所掩盖。

 

jo3 hours ago

gonna need a bigger fire extinguisher ....

需要一个大的灭火器....

 

Just Me4 hours ago

Amezing

不可思议

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