2,884 supernovae hint that dark energy changes over time

An international team led by the University of Queensland compiled the largest catalog of 2,884 Type Ia supernovae and combined it with cosmic microwave background data and galaxy maps. The results deviate from the standard model of constant dark energy and align with hints of time variation seen by DESI.

• Catalog combines 2,884 Type Ia supernovae observed over three decades
• Older data was reprocessed using improved supernova models
• Deviation from the standard model echoes independent DESI results
• The DEBASS program will add nearby supernovae to the dataset