Modified gravity theories violate the equivalence principle. If they are correct, we should see the effect in nearby galaxies.
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The Physics arXiv Blog's Stories
The pattern imprinted on the cosmic microwave background may have its origins in the Solar System.
The radio signals produced by passing gravitational waves could make them easier to detect.
A study of the distribution of bugs within large software programs should make it easier to find errors.
The nature of information is the key question for those pondering the laws of physics.
The best of the rest from the Physics arXiv this week:
If your simulations show the catastrophic collapse of ice sheets, under what circumstances can you ignore these predictions?
The idea that all particles are mini black holes has major implications for both particle physics and astrophysics, say scientists.
Fiddle with an invisibility cloak, and it can make any object look like another, say researchers.
Superconducting LEDs are brighter than anyone could explain. Until now.