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Alternative gravity theory offers possible explanation for dark energy changing over time
来源: Phys.org - latest science and technology news stories · 发布于
For many years, the simplest view of dark energy has been that it remains unchanged. Throughout cosmic history, the mysterious ingredient believed to drive the universe's accelerated expansion is thought to have behaved in the same way at every epoch. However, an increasing numbe
For many years, the simplest view of dark energy has been that it remains unchanged. Throughout cosmic history, the mysterious ingredient believed to drive the universe's accelerated expansion is thought to have behaved in the same way at every epoch. However, an increasing number of observations are challenging this idea.
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A 9-billion-year-old signal could help explain dark energy
A Canadian radio telescope has detected the faint glow of hydrogen from billions of years ago using only its own observations, proving a long-awaited way to map the distant universe can actually work. CHIME can use this hydrogen signal to trace how matter is spread across space a
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Some house cats carry a gut parasite that can infect humans, study finds
Giardia duodenalis is a microscopic, flagellated parasite that often calls the human and animal gut its home. In most cases, it coexists harmlessly with its host, and most infected pets and people show no signs of illness. However, when it becomes pathogenic, it can cause diarrhe
Phys.org - latest science and technology news stories ·
Scientists may have found a shortcut to fusion energy
Princeton Plasma Physics Laboratory may have found a dramatically more efficient route to fusion energy by reversing the traditional approach: heating plasma first, then increasing its density. Their calculations could help future reactors reach self-sustaining fusion with far le
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Scientists finally see how nature moves energy so efficiently
Researchers have captured key steps in a chemical reaction that helps nature transfer energy with remarkable efficiency. Ultrafast X-rays revealed how changes involving electrons and protons are closely linked to the rearrangement of surrounding water molecules. Because similar r
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How much RAM does a Raspberry Pi actually need?
Raspberry Pi boards have helped hobbyists get computing projects started for very little money down. However, knowing how much memory is needed can be tricky.
Engadget - Technology News & Expert Reviews ·