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Type Ia Supernovae

White Dwarfs Brightness Variability Pantheon+ Dataset SN 2022abvt Observations Measurement Dust Formation High-Redshift Type Ia Supernovae Circumstellar Gas Gas Interaction Double Detonation Astrophysical Factors Kepler's Supernova Cosmological Measurements Gas Interactions Gravitational Lensing

Gravitational-Lens Time Delays Deliver New Hubble Constant, Deepening the Tension

A TDCOSMO analysis of eight lensed quasars measures 71.6 km/s/Mpc with 4.5% precision, pointing to larger samples to reach decisive 1–2% tests.

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