Science ❯ Astronomy ❯ Cosmology

Supernovae

Type Ia Supernovae Stellar Evolution Gravitational Lensing Element Formation Stellar Explosions Stellar Companions Cassiopeia A Neutron Star Formation Stellar Remnants Cosmic Expansion Hubble Constant Brightness Curves Type Ia Supernova Supernova Remnants Type 1a Supernovae Stellar Dust Superluminous Supernovae Water Formation Mass Extinctions Beryllium-10 Anomaly Crab Nebula Gamma-Ray Telescopes Geological Records Star Explosions Gamma-ray Bursts SN2020acct James Webb Space Telescope Faint Thermonuclear Supernovae

Two Peer‑Reviewed Analyses Reach Opposite Conclusions on Cosmic Acceleration

The papers conflict because they apply different corrections to the same Pantheon+ supernova sample and say much larger Rubin/LSST data will be needed to decide which method is right.

Study Reaffirms Cosmic Acceleration After Rebutting 2025 Deceleration Claim

Magnetar ‘Chirp’ Identified in Superluminous Supernova as Short GRB Localized to Tidal-Stream Dwarf

JWST Spots Record-Distant Supernova Tied to March Gamma-Ray Burst

New Study Claims the Universe Is Now Decelerating After Supernova Age-Bias Correction

Astronomers Confirm Rare Binary with Neutron Star Stripping Companion