"Hubble's problems" could get worse with a new measurement of the expansion of the universe

“Hubble’s issues” might worsen with a brand new measurement of the enlargement of the universe

A picture of the Cepheid variable star RS Puppis. (Picture credit score: NASA, ESA and Hubble Heritage Crew (STScI/AURA)-Hubble/Europe Collaboration)

Essentially the most correct remark thus far of distant stars that periodically change in brightness might set off a rethinking of the speed at which the universe expands, maybe fixing a long-standing drawback in cosmology or going additional into it.

The remark confirms a disparity between the 2 primary strategies of measuring pace the universe it is increasing, conforming to 1 however not the opposite, a brand new research stories.

Researchers from the Stellar Normal Candles and Distances group used information collected by Europe’s Gaia spacecraft to check Cepheid variable stars, which pulsate recurrently, offering a approach to precisely measure cosmic distances. The Cepheid star measurement method expands on different strategies, such because the one primarily based on sort 1a observations supernova.

Author: ZeroToHero

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