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The universe is expanding more quickly than previously thought, scientists say

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universe is expanding more quickly than previously believed, and scientists aren’t really sure why. A recent study, which is set to be published in the Special Focus issue of The Astrophysical Journal, said that new results more than double the prior sample of cosmic distance markers used to measure the expansion of the universe.

Nobel Laureate Adam Riess of the Space Telescope Science Institute (STScI) and his team, along with the Johns Hopkins University in Baltimore, Maryland, "reanalyzed all of the prior data, with the whole dataset now including over 1,000 Hubble orbits." Hubble orbits mean the number of times the Hubble Space Telescope orbits the Earth, which is what was used to collect over 20 years’ worth of data to result in these recent findings. "You are getting the most precise measurement of the expansion rate for the universe from the gold standard of telescopes and cosmic mile markers," Riess said.

When comparing measurements from previous data and the current data, Riess’ team found that the rate at which the universe is expanding was off.

Previous measurements predicted the universe was expanding at a rate of 67.5 plus or minus 0.5 kilometers per second per megaparsec, according to NASA.

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