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Gravity has been tested extremely well inside the solar system. On cosmic scales, direct tests are harder. This study pushes ...

New research suggests that relic black holes from before the big bang may still shape galaxies today. These black holes could ...

Cyclic cosmology, or the big bounce, is the idea that the universe will eventually crunch back together and then go through ...

With innovative approaches to life-threatening diseases and natural disasters, UC San Diego researchers are making critical ...

After a 10-year effort, physicists got a value for “Big G” that does not settle the debate over one of nature’s hardest ...