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Scientists closing in on Milky Way black hole

Though scientists have suspected that a giant black hole lurks at the center of our galaxy, they still can't say for sure. Now researchers are closer than ever to imaging this region and probe the physics at work – potentially shedding light on the conflict between the theories of general relativityFull story

Quantum gravity tested in an elevator shaft

Scientists dropped an experiment down an elevator shaft of sorts to test a possible way to meld the physical theory of the very small (quantum mechanics) with the very large (general relativity), to create a theory of everything. Full story

Einstein was right: General relativity confirmed

Score one more for Einstein. A new study has confirmed his theory of general relativity works on extremely large scales. Full story

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