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  • Alright, try to remember the hottest you've ever felt!

  • Oh, the stifling heat and irking sensation of sweat trickling down your back and forehead.

  • But if you think that was hot, what if I tell you there are things in our Universe that

  • are literally billions of times hotter?

  • No I’m not trying to sell you a timeshare on the Sun!

  • But it’s a hot story!

  • As you may know, the Solar System itself can be a pretty scorching place.

  • The average temperature of the Earth's core reaches a blazing 10,800 degrees F, which

  • is 800 degrees higher than the surface of the Sun!

  • As for the Sun's super-hot center, it heats up to 27,000,000 degrees F!

  • But in terms of the Universe, these temperatures aremeh” -- nowhere near "hot" in comparison

  • with a supernova!

  • A supernova is the very last stage of a star's life, which ends in a gigantic explosion.

  • This explosion is the largest in space, and it unleashes enormous amounts of energy.

  • Therefore, the temperature at the core of a supernova is an incredible 6,000 times higher

  • than that of the Sun's core.

  • And that means it can reach several billion degrees F within microseconds!

  • After that, atoms get crammed together so infinitely closely that the squeezed core

  • recoils - and the star explodes, creating a superheated shock wave.

  • And still, the temperature of a supernova isn't the absolute hottest thing in the Universe,

  • not even close.

  • The highest temperature has been discovered - or is it better to say created? - on Earth;

  • in Switzerland, to be exact.

  • Yep, however unbelievable it may sound, the hottest temperature in the whole Universe

  • is man-made!

  • In 2012, scientists at CERN's Large Hadron Collider crashed the ions of lead to "cook"

  • a so-called "subatomic soup."

  • The result was a plasma with an astonishing temperature of 9.9 trillion degrees F!

  • Just keep in mind that it's about 360,000 times hotter than the center of the Sun, and

  • approximately 5,000 times hotter than a supernova!

  • The scientists who’d been working on this project were elated.

  • This time, they managed to surpass the previous world record of 7.2 trillion degrees F and

  • create a plasma that was an impressive 38% hotter.

  • The experiment showed in detail what couldve happened 13.7 billion years ago, just microseconds

  • after the Big Bang.

  • It all sounds really exciting, but you should remember that I've told you about the hottest

  • temperatures that have ever been recorded.

  • And no researcher can guarantee that somewhere out there in space, there isn't another phenomenon

  • which is thousands of times hotter than a supernova, or even the plasma cooked up in

  • the Large Hadron Collider!

  • Theoretically, it could get even hotter than that because there is an Absolute Hot.

  • This temperature has too many zeros for me to pronounce it; and beyond this point, matter

  • stops behaving like it's supposed to.

  • (So, it’s doesn’t matter?

  • Ha) All fundamental forces get unified into one, and bizarre and inexplicable things start

  • to happen.

  • The Theory of Everything could probably explain the absurd behavior and new properties of

  • matter heated to the extreme... if this all-embracing theory had already been discovered, that is.

  • Anyway, what other super-hot things have you heard about?

  • Tell me about your findings in the comments below!

  • And since you know about the hottest things in this Universe now, it would only be fair

  • to talk about the coldest ones, wouldn't it?

  • I think we need to chill anyways.

  • I have to tell you that atoms like - no, love - heat.

  • They start to race around as soon as they get warmer.

  • The hotter it gets, the more vigorously they vibrate.

  • But what if the temperature drops down?

  • Well, apparently, their movement slows down, depending on how low the temperature is.

  • Theoretically, there’s a point at which atoms stop moving.

  • This temperature is called Absolute Zero, and it's equal to 0 degrees Kelvin or -459.67

  • degrees F. But you should keep in mind that such a temperature is totally hypothetical,

  • and people have never witnessed anything that cold!

  • On the other hand, on which I’m wearing a nice warm mitten, several places in the

  • Solar System come pretty close to Absolute Zero.

  • For example, craters near the South Pole of the Moon are permanently shadowed and never

  • see sunlight.

  • That's why their temperature usually stays around 33 Kelvin or -400 degrees F. And that's

  • even colder than the temperatures on Pluto, the coldest planet-like object in the Solar

  • System!

  • But the most naturally-cold thing in the visible Universe is the mysterious Boomerang Nebula,

  • (wooo) created by an expiring red giant star.

  • This nebula is located approximately 5,000 light-years away from the Earth, and its temperature

  • is considered to be just 1 Kelvin, or -four hundred some degrees F!

  • (Yep, THAT close to Absolute Zero!)

  • By the way, the Boomerang Nebula (it keeps coming back) isn't the only mega cold object

  • floating out there in space.

  • Don't forget about the cooling leftovers of the Big Bang!

  • These bits and pieces, which are as cold as -454 degrees F, are still found all over the

  • Universe.

  • But do you remember I just said that the Boomerang Nebula is the coldest NATURAL spot in the

  • Universe?

  • Well, I said that for a reason.

  • Let’s see what WAS that reason?

  • Oh yeah, the thing is that the coldest temperature people have ever recorded was on Earth!

  • It happened in an Italian underground laboratory, where scientists chilled a 35-cubic-ft chunk

  • of copper to an incredible 6 millikelvins (and that's only a tiny fraction of a degree

  • above Absolute Zero)!

  • In other words, the atoms inside that chunk of copper almost stopped moving!

  • The researchers managed to reach this result after they put the cube inside a super-cold

  • special refrigerator called a cryostat, which is capable of keeping things at unimaginably

  • low temperatures!

  • Like Vanilla ice cream!

  • But the most exciting thing is that scientists could maintain this temperature for almost

  • two weeks.

  • They wanted to see how neutrinos (which are minuscule subatomic particles) behaved.

  • Their activity couldve revealed the secrets of the matter surrounding us.

  • Hmm...I wonder what happens when neutrinos misbehave?

  • Do they go to detention?

  • Stay tuned.

  • In any case, thank goodness, I'm not likely to ever experience such extreme temperatures

  • in my lifetime!

  • But what I CAN do is to travel to the hottest and the coldest places on Earth!

  • When the temperature dropped to minus 128 degrees F on July 21, 1983, Soviet Vostok

  • Station, in Antarctica, officially became the place with the lowest ever recorded temperature.

  • But if were talking about something more permanent, then the coldest habitable place

  • in the world is Oymyakon village in Russia.

  • There, the temperature often drops below 32 degrees F in September, and it doesn't get

  • any warmer until the middle of April.

  • The average winter temperature is -58 degrees F, and the summer season is also chilly.

  • But at least in June and July, the temperature never falls below 14 degrees F (phew, what

  • a relief!).

  • On the other hand, the temperature never ever rises above the freezing point between the

  • end of October and the middle of March.

  • But on January 26, 1926, Oymyakon smashed all the records!

  • The temperature in the village dropped to -96 degrees F, which became the coldest recorded

  • temperature in the Northern Hemisphere!

  • And if youre wondering about the coldest temperature ever recorded in the USA, it happened

  • in Prospect Creek in central Alaska (surprise-surprise!) on January 23, 1971.

  • That's when thermometers dropped to -80 degrees F!

  • Well, I don't know about you, but I'm starting to feel like a popsicle!

  • How about we move to the hottest place on the Earth?

  • And by that, I mean Death Valley in California.

  • Inviting name, eh?

  • Unfortunately, researchers are still arguing about whether this place holds the record

  • for the hottest ever recorded surface temperature: 201 degrees F on July 15, 1972.

  • But even without the record, Death Valley is a place to stay clear of if youre a

  • fall weather kinda person.

  • In July 2018, the average monthly temperature in that area was 108 degrees F. On top of

  • that, Death Valley holds the record for the most consecutive days with a temperature above

  • 120 degrees: 43 sizzling days!

  • Another interesting temperature record was made in Spearfish, South Dakota.

  • On January 22, 1943, they had the most impressive temperature change: from -4 to 45 degrees

  • F. The temperature difference was 49 degrees F, and it happened within a mere 2 minutes!

  • The whole town had a hot flash!

  • Hey, if you learned something new today, then give the video a like and share it with a

  • friend!

  • And here are some other videos I think you'll enjoy.

  • Just click to the left or right, and stay on the Bright Side of life!

Alright, try to remember the hottest you've ever felt!

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宇宙中最極端的溫度 (The Most Extreme Temperatures in the Universe)

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    林宜悉 發佈於 2021 年 01 月 14 日
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