Scientists Say That Something Very Weird Is Going on With the Universe

Astronomers have made an intriguing discovery that could upend everything we know about the structure of the universe and its expansion. Scientists recently found that dark energy, the mysterious form driving the accelerating expansion of the universe, could be weakening over time. The findings could undermine the existing standard cosmological model of the universe called the lambda-cold dark matter (LCDM) model, which takes dark energy, ordinary matter, and cold dark matter — a hypothetical form of dark matter that moves slowly compared to the speed of light — into consideration. The symbol lambda in the model refers to Albert Einstein's cosmological constant, which assumes that the universe is accelerating at a fixed rate. Yet, last year, scientists concluded that dark energy isn't a constant after all, analyzing observations by the Dark Energy Spectroscopic Instrument (DESI) in Arizona, as New Scientist reports. They found that the mysterious force could be evolving and weakeni ... Read full article.