In a Lab on Earth, Scientists Just Replicated Pressures Found on White Dwarf Stars – ScienceAlert

For the first time, pressure over 100 times that found in Earth’s core has been generated in a lab, setting a new record.
Using the highest-energy laser system in the world, physicists briefly subjected solid hydrocarbon samples to pressures up to 450 megabars, meaning 450 million times Earth’s atmospheric pressure at sea level.
That’s equivalent to the pressures found in the carbon-dominated envelopes of a rare type of white dwarf star – some of the densest objects in the known Universe. It c…

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