Could Dark Energy Be Changing as the Universe Expands?

Could dark energy change over time? A new approach to teleparallel gravity suggests that dark energy may have begun with negative density in the early universe before becoming positive billions of years later. The theory could help explain the Hubble tension while remaining consistent with solar-system gravity tests. But can it survive a full comparison with DESI data? The answer could reshape our understanding of cosmic expansion. Thank you for listening to Bedtime Astronomy — your guide to the cosmos. New episodes on space exploration, NASA missions & the latest astronomy breakthroughs. This episode includes AI-generated content.