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The researchers, who used the Hubble Space Telescope, focused on a supernova — or a star that suddenly dissolved through a catastrophic explosion.

This image shows the massive galaxy cluster MACS J1149.5+223, whose light has taken more than 5 billion years to reach us. The cluster's massive mass

April 21, 2021 at 12:00 pm Astronomers have been arguing about the rate of the universe’s expansion for nearly a century. A new independent method to measure that rate could help cast the deciding vote. For the first time, astronomers calculated the Hubble constant — the rate at which the universe is expanding — from observations of cosmic flashes called fast radio bursts, or FRBs. While the results are preliminary and the uncertainties are large, the technique could mature into a powerful tool for nailing down the elusive Hubble constant, researchers report April 12 at arXiv.org. Ultim...