The older we get, the less we know (cosmologically)

(Phys.org) -- The universe is a marvelously complex place, filled with galaxies and larger-scale structures that have evolved over its 13.7-billion-year history. Those began as small perturbations of matter that grew over ...

Researchers reveal unseen planet by its gravity

More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. In a paper published ...

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Perturbation

Perturbation or perturb may refer to any of numerous concepts in several fields:

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