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The 66 pages that link to Type Ia supernova, each with the reason it gives.

• Allan SandageRelated: Calibrated Type Ia supernovae became distance indicators for testing expansion measurements such as Sandage’s.

• Galactic habitable zoneRelated: These events add heavy elements while also posing potential radiation hazards.

• Kepler's SupernovaBroader topic: The remnant’s properties indicate that the 1604 event was a Type Ia explosion.

• Physical cosmologyRelated: Their measured distances revealed that cosmic expansion is accelerating.

• Chronology of the universeRelated: Distant examples revealed that expansion is accelerating in the recent universe.

• Expansion of the UniverseRelated: Distant supernovae revealed that expansion is accelerating.

• Observational cosmologyBroader topic: Their apparent faintness at high redshift revealed accelerated cosmic expansion.

• SN 1572Narrower topic: Modern observations identify SN 1572 as an example of this supernova class.

• Tired lightBroader topic: Their observed time dilation and distance–brightness relation challenge simple tired-light explanations.

• Common envelopeRelated: Common-envelope evolution is one route proposed for producing close white-dwarf progenitors.

• HypernovaCompared with: Unlike a hypernova, it is not the collapse of a massive stellar core.

• Intergalactic dustRelated: Intergalactic extinction could bias their measured brightness and inferred distances.

• Recessional velocityRelated: Its distance measurements paired with recession data revealed accelerated cosmic expansion.

• SN 1972ENarrower topic: SN 1972E belongs to this supernova class, whose luminosities can be standardized.

• Type Ib and Ic supernovaeCompared with: Its hydrogen-free spectrum can resemble Ib or Ic at a glance, but its explosion mechanism differs.

• Ultimate fate of the universeRelated: Supernova observations revealed that cosmic expansion is accelerating.