Supernova measurements provide new insights into universe's expansion rate.

A team led by University of Minnesota Twin Cities researchers has used a first-of-its-kind technique to measure the expansion rate of the universe, providing insight into a longstanding debate in the field and could help scientists more accurately determine the universe's age and better understand the cosmos. The researchers were able to calculate this value using data from a supernova discovered by Kelly in 2014—the first ever example of a multiply imaged supernova. The researchers' findings don't absolutely settle the debate, but they do provide more insight into the problem and bring physicists closer to obtaining the most accurate measurement of the universe's age.