Death masks have always fascinated me. I am not a morbid person by any means; but death masks allow you to look at an individual, as they…… Read more “Faces of history”
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Neutron star density
Imagine something having the mass of our sun, multiplied by about 1.5, and only 20 miles in diameter. That is a Neutron star. Something so incredibly dense…… Read more “Neutron star density”