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Why atoms are the Universe s greatest miracle

How to prove the Big Bang with an old TV set

Here s why uranium enrichment is central to Iran s nuclear ambitions

Here s why uranium enrichment is central to Iran s nuclear ambitions
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Does time really exist?

A newfound quasicrystal formed in the first atomic bomb test

In an instant, the bomb obliterated everything. The tower it sat on and the copper wires strung around it: vaporized. The desert sand below: melted. In the aftermath of the first test of an atomic bomb, in July 1945, all this debris fused together, leaving the ground of the New Mexico test site coated with a glassy substance now called trinitite. High temperatures and pressures helped forge an unusual structure within one piece of trinitite, in a grain of the material just 10 micrometers across a bit longer than a red blood cell. Proceedings of the National Academy of Sciences. Normal crystals are made of atoms locked in a lattice that repeats in a regular pattern. Quasicrystals have a structure that is orderly like a normal crystal but that doesn’t repeat. This means quasicrystals can have properties that are forbidden for normal crystals. First discovered in the lab in 1980s, quasicrystals also appear in nature in meteorites (

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