There are several foundational observations often cited in support of dark energy—such as the accelerated expansion inferred from supernova data, CMB measurements, and large-scale structure.
However, many of these references date back over a decade. I'm curious about recent developments (say, in the last decade), and whether they have:
- Strengthened the case for dark energy as a real physical field or force rather than simply a cosmological constant or model-dependent term
- Improved our ability to distinguish between dark energy and alternative explanations
Has there been any significant observational or experimental progress in the last decade that provides more direct or decisive support for dark energy as a physical entity?
