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Research can answer some of the world’s biggest questions how to treat cancer, solve poverty, deal with climate change but others explore more off-the-wall topics. ....
Contact: [email protected] Quasars are extraordinarily distant celestial objects that throw off a massive amount of light, and astrophysicists use them to probe cosmological theories. In some cases, astrophysicists have used them to estimate the rate at which the universe expands, called the Hubble constant. Now, a team of researchers from the University of Michigan and the University of Hawaii’s Institute of Astronomy are suggesting a new way to use them to measure the expansion of the universe directly. They propose a method called intensity correlation speckles to measure the difference between the redshift in which light stretches as it travels through an expanding universe, causing its wavelength to elongate in two paths of light from the same quasar. The team’s method was published in the journal Physical Review A. ....