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Physicists are reexamining a longstanding assumption: that big stuff consists of smaller stuff.
Celia Escamilla-Rivera is combining large data sets with supercomputers to test general relativity against its little-known competitors.
A central pillar of cosmology — the universe is the same everywhere and in all directions — is surviving a storm of possible evidence against it.
Cora Dvorkin discovered new possibilities for what dark matter could be. Now she’s devising unorthodox ways to identify it.
Physicists have proposed extra cosmic ingredients that could explain the faster-than-expected expansion of space.
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