Aug 31, 2025 05:07 PM
https://bigthink.com/starts-with-a-bang/...r-constant
KEY POINTS: Back in the late 1990s, observations of the cosmic microwave background, supernovae, and large-scale structure, combined, pointed to a cosmic picture of an accelerating Universe, dominated by a mysterious “dark energy.” For decades, that picture held sway, but slight discrepancies between those different methods of measuring the Universe appeared and remained, becoming very significant here in the 2020s. Many are claiming that dark energy must be evolving, while others demand more evidence and insist that dark energy is just fine still being a plain old cosmological constant. Who’s right? (MORE - details)
KEY POINTS: Back in the late 1990s, observations of the cosmic microwave background, supernovae, and large-scale structure, combined, pointed to a cosmic picture of an accelerating Universe, dominated by a mysterious “dark energy.” For decades, that picture held sway, but slight discrepancies between those different methods of measuring the Universe appeared and remained, becoming very significant here in the 2020s. Many are claiming that dark energy must be evolving, while others demand more evidence and insist that dark energy is just fine still being a plain old cosmological constant. Who’s right? (MORE - details)