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1,831 notícias encontradas para "time"
Catching hydrogen in the act: Tracking the absorption process over time
If you're looking for hydrogen on the elemental chart, it won't take you long to find it. It is right there at the beginning, the lightest possible material. One electron, one proton—that's it. Simple, minimalistic, the Marie Kondo of the elemental chart, but with enormous potent
New probe could help trace Alzheimer's-linked lipids one cell at a time
Cells sitting side by side in the same tissues are not identical. Each cell carries its own subtly different chemical signature—a hidden individuality that can reveal how diseases take root and spread. Now, researchers from the University of Osaka have developed a technique sensi
These ancient quasars shouldn't exist so soon after the Big Bang
Astronomers have uncovered 31 of the oldest known quasars, including the two earliest ever detected, shining from a time when the universe was only about 670 million years old. Powered by supermassive black holes billions of times the Sun’s mass, these incredibly bright objects c
Foto: Sami  Abdullah / Pexels
AI can predict how you'll respond to a survey—but that's not the same as understanding you
What makes people change their minds or their behavior? Social scientists spend a lot of time thinking about this question, and experiments are one of the most powerful ways to answer it.
The brown huntsman timed as the fastest spider at a top speed of 3.59 m/s – video
Brown huntsman spiders were filmed to measure their speed. The 2021 research has been included in new analysis of the speeds of more than 250 spider species by scientists in the UK and Germany, which concludes the brown huntsman, Heteropoda jugulans, has a top speed of 3.59 m/s,
Foto: Ivan Babydov / Pexels
Camera traps reveal Chornobyl wildlife changed routines during Russian occupation
An international research team has for the first time investigated how an unfolding armed conflict influenced the behavior of wild animals. Using camera traps, the scientists documented how the Russian occupation of the Chornobyl Exclusion Zone during the 2022 war in Ukraine affe
A 'smart ruler' could help swarms of space telescopes image exoplanets
A 'smart ruler' could help swarms of space telescopes image exoplanets
We've talked plenty of times here about the infeasibility of launching a mirror big enough to directly image exoplanets using current rocket fairings—at least as long as we're not sending them 500-plus AU away to a gravitational lensing point. We've also talked at length about th
Pre-cooked seafood-based meals can absorb chemical contaminants during packaging and proce
Ready meals containing fish and seafood can expose consumers to chemical contaminants that are present in the environment or introduced during processing and packaging. A study by the Universitat Rovira i Virgili (URV) has, for the first time, analyzed the presence of a wide rang
Physicists created a tiny universe where time emerged without a clock
Physicists created a tiny universe where time emerged without a clock
What if time doesn't actually exist until something changes? Scientists at the University of Birmingham created a tiny "mini universe" using 24,000 ultracold atoms and showed that the flow of time can emerge naturally from changes inside a quantum system, without relying on any e
China lands reusable rocket for first time, state media says
China lands reusable rocket for first time, state media says
It follows similar landings of reusable rockets by US-owned companies SpaceX and Blue Origin. O recorte ajuda a contextualizar a pauta dentro de Agro.
Country diary: I thought I was poking a hedgehog’s nest. I was wrong | Claire Stares
Country diary: I thought I was poking a hedgehog’s nest. I was wrong | Claire Stares
Langstone, Hampshire: Tree bumblebees are generally placid, but they’re not keen on someone prodding their home with the end of a bamboo caneLast summer, one by one, all our visiting hedgehogs fell victim to the road. For the first time in years, the hedgehog house beneath a purp
Foto: Google DeepMind / Pexels
Bacteria turn dissolved uranium into stable compound in 130 days, study finds
Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), together with Wismut GmbH and scientists from the University of Granada in Spain, have demonstrated for the first time that bacteria can convert uranium dissolved in water into a stable chemical compound when they ha