Using the largest catalog of exploding white dwarf vampire stars ever gathered has provided further evidence that dark energy, the mysterious force accelerating the expansion of the universe, is getting weaker.
Hints at the evolution of dark energy, which accounts for around 70% of the universe's mass and energy, were first delivered last year by the Dark Energy Spectroscopic Instrument (DESI). This indication was shocking because the best description we have of the cosmos, the standard model of cosmology, or the Lambda Cold Dark Matter (LCDM) model, predicts that dark energy should be constant over time.
