Dark energy - Wikipedia Since the discovery of accelerating expansion, several independent lines of evidence have been discovered that support the existence of dark energy The exact nature of dark energy remains a mystery, and many possible explanations have been theorized
What is Dark Energy? Inside Our Accelerating, Expanding . . . But the cosmos wouldn’t stay this way Nine billion years after the universe began, its expansion started to speed up, driven by an unknown force that scientists have named dark energy But what exactly is dark energy? The short answer is: We don't know
What’s Driving Dark Energy? New DESI Data Suggests Evolution What’s driving dark energy? New DESI data hints dark energy may evolve over time, challenging cosmological constant model and opening new theoretical possibilities Fundamental cosmological mystery centers on what is driving dark energy, the mysterious force accelerating universe expansion Scientists recognize Lambda-CDM model, though remarkably successful for 25 years, remains incomplete
Dark energy | Definition, Discoverers, Facts | Britannica Dark energy, in contrast to both forms of matter, is relatively uniform in time and space and is gravitationally repulsive, not attractive, within the volume it occupies The nature of dark energy is still not well understood
Whats Driving Dark Energy? - Universe Today So, here we go: accelerated expansion -> cosmological constant -> vacuum energy -> dark energy It’s a hypothesis that vacuum energy is ultimately responsible for the accelerated expansion