INFOGRAPHIC: The Most Extreme Temperatures of the Universe

16 Jan 2017

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Written By

Julie Rossman and Daniel Smiertka, WSF New York

To humans, the difference between hot and cold is simply switching a winter coat for shorts and sandals. In reality, our universe can get much, much hotter than an Earthly summer, like the scorching temperatures found during a supernova. It can also get much colder, like the frigid Boomerang Nebula, which is chillier than empty space.

Scientists measure these temperatures on what’s called the Kelvin scale, which starts at a theoretical absolute zero, the point at which all molecular movement stops. These extreme temperatures result in fascinating physical and chemical changes, like the nuclear fusion that powers the sun. But can we take these intense temperatures further?

Physicists at the Large Hadron Collider (LHC) at CERN have smashed lead ions together to achieve the hottest man-made temperatures ever recorded – around 5.5 trillion Kelvin. And scientists at MIT have cooled sodium gas with lasers to half a billionth of a degree above absolute zero.

Experimenting with extreme temperatures could be a promising window into solving many of our universe’s lingering mysteries, perhaps even giving clues to the earliest moments of its existence.

Book tickets to see the Large Hadron Collider Exhibition or join a panel discussion with international guests including Dr Harry Cliff, particle physicist and curator of the exhibition at the Science Museum, London.

The World Science Festival Brisbane 2017 Regional Program includes a free talk with Dr Harry Cliff. Book a spot.

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Written By
Julie Rossman and Daniel Smiertka, WSF New York

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