Supernovae Point to a Changing Dark Energy ⚡ экспресс
Original: "Strong Progenitor Age-bias in Supernova Cosmology. II. Alignment with DESI BAO and Signs of a Non-Accelerating Universe"
Accounting for the age of supernova progenitor stars reveals that dark energy is likely not constant, but changes over time.
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Old stars explode dimmer — it's as if old candles gave off less light. Astronomers found that the age of supernova progenitors distorts cosmic distance measurements. After correction, it turned out: dark energy may be changing, and the Universe's acceleration might have stopped.
🎯 Type Ia supernovae are born when a white dwarf pulls matter from a companion star and, reaching a critical mass, explodes. Despite the ‘Ia’ label, they have nothing to do with stellar classes — it’s a historical classification based on spectra.