科学与环境
Dark energy may have flipped from negative to positive 9.5 billion years ago
来源: All Top News -- ScienceDaily · 发布于
A mysterious force driving the expansion of the Universe may have undergone a dramatic reversal billions of years ago. Scientists exploring an overlooked branch of an alternative gravity theory discovered that dark energy could have switched from negative to positive roughly 9.5
A mysterious force driving the expansion of the Universe may have undergone a dramatic reversal billions of years ago. Scientists exploring an overlooked branch of an alternative gravity theory discovered that dark energy could have switched from negative to positive roughly 9.5 billion years ago, potentially changing how we understand cosmic history.
相关报道
A radical theory says the universe is twice as old as we thought
A provocative new cosmological model suggests the Universe could be 26.7 billion years old and might not need dark matter or dark energy to explain its behavior. University of Ottawa researchers tested the theory against several major astronomical observations, finding that it co
All Top News -- ScienceDaily ·
Scientists accidentally solve a chemistry mystery that lasted 60 years
After more than 60 years of unsuccessful attempts, scientists have finally isolated stable examples of elusive boron-oxygen molecules once considered too unstable to capture. The surprising breakthrough, achieved using relatively simple chemical reactions, could pave the way for
All Top News -- ScienceDaily ·
Scientists discover that a clogged filter could revolutionize oil refining
Scientists have developed a remarkable new membrane that separates crude oil at room temperature, using the oil itself to create microscopic filtration channels. The breakthrough could cut refining energy consumption by nearly 32%, carbon emissions by almost 38%, and operating co
All Top News -- ScienceDaily ·
Scientists say a forgotten particle may explain why the universe exists
A mysterious particle overlooked for decades may hold the key to why matter survived the Big Bang, allowing stars, planets, and life to exist. Scientists believe this forgotten neutrino reshaped the early universe and may have left detectable gravitational wave signals that could
All Top News -- ScienceDaily ·
Einstein's equations may explain the universe without dark energy
Mathematicians have uncovered what they argue is a fundamental flaw in the standard model of the universe, potentially challenging the need for dark energy. Their calculations suggest that the mathematical framework used to describe cosmic expansion is inherently unstable and tha
All Top News -- ScienceDaily ·