Einstein

The Hyades star cluster (pink) curls across the sky amid well-known constellations (green). The cluster is at the center of a controversial new study proposing an alternative to Newton

Unbalanced star cluster could disprove Newton and Einstein, controversial new study suggests

Astronomers observing star clusters in our galaxy have found evidence that controversially challenges Newton’s laws of gravity and could upend our understanding of the universe. The puzzling discovery could support a controversial idea that removes dark matter entirely. The researchers found this evidence by observing open star clusters or loosely bound groups of a few …

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The cosmic test of general relativity disagrees with Einstein

The cosmic test of general relativity disagrees with Einstein

A new large-scale test of Einstein’s “general relativity theory” has raised questions about this cornerstone of modern physics. “General relativity” provides a powerful predictive framework for one of nature’s fundamental forces: gravity. The theory is remarkably successful in describing gravity when talking about stars and planets. But different physical scales present challenges for Einstein’s theory. …

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