Gravitational waves emitted when superdense neutron stars collide
Artist's impression of the explosion and burst of gravitational waves emitted when a pair of superdense neutron stars collide. New observations with radio telescopes show that such events can be used to measure the expansion rate of the universe.
Astronomers used the National Science Foundation's Very Long Baseline Array, the Karl G. Jansky Very Large Array and the Robert C. Byrd Green Bank Telescope to make these observations.
Learn more about this research in the National Radio Astronomy Observatory news story New method may resolve difficulty in measuring universe’s expansion. (Date image taken: unknown; date originally posted to NSF Multimedia Gallery: Oct. 2, 2019)
Credit: NRAO/AUI/National Science Foundation
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