New Method May Resolve Difficulty in Measuring Universe’s Expansion
9 Jul 2019, 12:58 UTC
NRAO/AUI/NSF
Astronomers using National Science Foundation (NSF) radio telescopes have demonstrated how a combination of gravitational-wave and radio observations, along with theoretical modeling, can turn the mergers of pairs of neutron stars into a “cosmic ruler” capable of measuring the expansion of the Universe and resolving an outstanding question over its rate.
