Cosmology Dispatches

Dispatches · Latest in Cosmology · 17 Aug 2026

New Survey Data Puts Dark Energy's Equation of State in Question

For decades dark energy has been treated as a constant. Fresh baryon acoustic oscillation data suggests it may be evolving over cosmic time.

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Cosmology

Cosmology03 Aug 20261 min read

The Cosmic Microwave Background's Stubborn Anomalies

The CMB is remarkably uniform, except where it is not. A tour of the cold spot, the hemispherical asymmetry, and what they might mean.

Cosmology21 Jul 20261 min read

The Hubble Tension Still Has No Resolution, and That Is the Point

Two independent ways of measuring how fast the universe is expanding keep disagreeing. Neither side has found the error, because there may not be one.

Cosmology dispatches

New Survey Data Puts Dark Energy's Equation of State in Question

Cosmology

The Cosmic Microwave Background's Stubborn Anomalies

The Hubble Tension Still Has No Resolution, and That Is the Point