Something weird happens when you keep squeezing
Under extreme pressures, matter defies the rules of physics as we know it.Help keep Vox free for everybody: http://www.vox.com/give-now
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Physicists have a pretty good handle on how stuff behaves on the surface of the Earth. But a lot of matter in the universe exists outside this narrow band of relatively low temperatures and pressures. Inside planets and stars, the crushing force of gravity begins to overwhelm the electromagnetic and nuclear forces that keep atoms apart and maintain the shapes of molecules.
What happens next? Scientists (including a consortia of researchers at the NSFâs Center for Matter at Atomic Pressuresââ) are just starting to figure that out. They use a variety of tools (including some humongous lasers) to simulate planetary cores and see what happens. A few standout findings so far:
Water can become a hot black ice that conducts electricity: https://www.quantamagazine.org/black-hot-superionic-ice-may-be-natures-most-common-form-of-water-20190508/
Hydrogen gas can be compressed down into a shiny metal: https://www.newscientist.com/article/2119442-metallic-hydrogen-finally-made-in-lab-at-mind-boggling-pressure/
Sodium (a soft, silvery metal at atmospheric pressure) can turn transparent: https://www.sciencedaily.com/releases/2009/03/090312180838.htm
Presented by the Center for Matter at Atomic Pressures (CMAP) at the University of Rochester,
a National Science Foundation (NSF) Physics Frontier Center, Award PHY-2020249 https://cmap.rochester.edu/
What happens under extreme pressures deep with planets also influences their ability to foster life. Check out our videos about the search for Earth-like worlds beyond our solar system:
What we found when we went looking for another Earth: https://www.youtube.com/watch?v=lrAFaONyLtU
How to find a planet you canât see:
https://www.youtube.com/watch?v=STsI6IbPbGQ
Hereâs a closer look at another giant laser (at the National Ignition Facility):
https://www.youtube.com/watch?v=gMaKhXkihGQ
To see a classic film that takes a similar approach to understanding distances (from the microscopic to the galactic) check out âPowers of Tenâ: https://www.youtube.com/watch?v=0fKBhvDjuy0
This material is based upon work of the Center for Matter at Atomic Pressures (CMAP), supported by the National Science Foundation under Grant No. PHY-2020249. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author(s) and do not necessarily reflect those of the National Science Foundation.
This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856, the University of Rochester, and the New York State Energy Research and Development Authority.
This video was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the U.S. Government or any agency thereof.
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