A new technique using time-delay cosmography might finally resolve the biggest tension in modern physics
Sandeep K S
Dec 7, 2025
1 min read
This infographic illustrates the cosmic mystery of differing universe expansion rates, with measurements from cosmic microwave background (67 km/s/Mpc) and supernova observations (73 km/s/Mpc). It introduces time-delay cosmography, using galaxy lenses and quasars, as a new method suggesting the universe's expansion aligns with the higher rate, emphasizing potential gaps in our understanding of the cosmos.
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