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The Conversation USA

A subtle symphony of ripples in spacetime – astronomers use dead stars to measure gravitational waves produced by ancient black holes

  • Written by Chris Impey, University Distinguished Professor of Astronomy, University of Arizona
imageBlack holes and other massive objects create ripples in spacetime when they merge.Victor de Schwanburg/Science Photo Library via Getty Images

An international team of astronomers has detected a faint signal of gravitational waves reverberating through the universe. By using dead stars as a giant network of gravitational wave detectors, the...

Read more: A subtle symphony of ripples in spacetime – astronomers use dead stars to measure gravitational...

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  3. What Beijing's muted response to Wagner mutiny tells us about China-Russia relations – and what it doesn't
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  7. By 'helping' wild animals, you could end their freedom or even their lives – here's why you should keep your distance
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  10. 3 myths about immigration in America
  11. A 2003 Supreme Court decision upholding affirmative action planted the seeds of its overturning, as justices then and now thought racism an easily solved problem
  12. IceCube neutrino detector in Antarctica spots first high-energy neutrinos emitted in our own Milky Way galaxy
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  14. Yes, debates do help voters decide – and candidates are increasingly reluctant to participate
  15. Bridge collapses, road repairs, evacuations: How transportation agencies plan for large-scale traffic disruptions
  16. Meltwater is hydro-fracking Greenland’s ice sheet through millions of hairline cracks – destabilizing its internal structure
  17. Think being a NASCAR driver isn't as physically demanding as other sports? Think again
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  22. What is the difference between nationalism and patriotism?
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  24. A trauma-focused therapy is helping Ukrainian children besieged by war – a clinical psychologist explains how it could bring resilience to kids around the world
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