| Astronomers spot the largest rotation in the universe | | | Astronomers said this month that they've discovered a rotation - a spin - on an enormous scale never seen before. They made the discovery by mapping the motion of galaxies in huge filaments or strands of what's called the cosmic web. They were looking at the universe on the grandest scale, in which there are great filaments made of galaxies, separated by giant voids. And they found that these long tendrils of galaxies and dark matter - these vast cosmic filaments of the cosmic web - rotate or spin on the scale of hundreds of millions of light-years. Read more. | | |
| The sad fate of krill in the Southern Ocean | | | Little shrimplike krill lie at the base of the Southern Ocean food web. Many sea creatures in this ocean, which surrounds Antarctica, eat krill. That includes penguins, seals, fish and whales. But krill populations are projected to decline about 30% this century, due to human-driven climate change. And natural variability in climate will also play a role. A new study, one of the first of its kind, tries to tease apart the effects of natural climate variation from human-caused climate change. One result, according to these scientists: it'll be hard to tell the difference between natural and human-caused effects on krill until late in the 21st century. Here's why that's important. | | |
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Methane on Enceladus: A possible sign of life? | | With its global subsurface water ocean, Saturn's moon Enceladus is considered to be one of the best places to search for life. Now, new research from a team of biologists suggests life on Enceladus might indeed be quite possible ... and that we might already have evidence for it. Something is producing a lot of methane on Enceladus, or rather in its subsurface ocean. And methane can be a life sign. Read more. | | |
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