New observations from NASA’s Chandra X-ray Observatory reveal a very bright source of X-rays that is likely powered by either a ring of stellar-mass black holes or neutron stars located 300 million light-years from Earth.
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New observations from NASA’s Chandra X-ray Observatory reveal a very bright source of X-rays that is likely powered by either a ring of stellar-mass black holes or neutron stars located 300 million light-years from Earth.
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