Science

Asteroid Ryugu was once part of a much larger mother body, new results show

Asteroid Ryugu was once part of a much larger mother body, new results show

Enlarge / First discovered by astronomers in May 1999, Ryugu is essentially a large accumulation of loose debris. JAXA Japan’s Hayabusa2 spacecraft returned in December 2020 with soil samples collected from a nearby asteroid, 162173 Ryugu. These samples were split between six scientific teams around the world for cutting-edge analysis to determine their composition in …

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Swimming against the tide: Scientists unveil the unique diet of garden eels

Engineers are building a battery-free, wireless underwater camera: The device could help scientists explore unknown regions of the ocean, track pollution or monitor the effects of climate change

Scientists estimate that more than 95 percent of Earth’s oceans have never been observed, meaning we’ve seen less of our planet’s ocean than the far side of the moon or the surface of Mars. The high cost of powering an underwater camera for a long time by tethering it to a research vessel or sending …

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New theory concludes life's likely origin on Earth-like planets

New theory concludes life’s likely origin on Earth-like planets

Credit: Pixabay/CC0 Public Domain Does the existence of life on Earth tell us anything about the likelihood of abiogenesis – the origin of life from inorganic substances – arising elsewhere? That’s a question that has puzzled scientists and anyone else who thinks about it for some time. A widely accepted argument by Australian-born astrophysicist Brandon …

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“Something’s wrong”: study on superconductivity at room temperature withdrawn

In 2020, Ranga Dias, a physicist at the University of Rochester, and his colleagues published a sensational result in Nature, pictured on the cover. They claimed to have discovered a room-temperature superconductor: a material in which electric current flows smoothly without special cooling systems. Although it was just a speck of carbon, sulfur, and hydrogen …

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Diamond from 660 kilometers below the surface shows a water-rich environment

Diamond from 660 kilometers below the surface shows a water-rich environment

Deep beneath the surface of our world, far beyond our faint reach, mysterious processes grind and roll. Every now and then, Earth emits clues as to its nature: tiny chthonic diamonds encasing skerricks of rare minerals. From these tiny fragments we can gather information about the interior of our planet. A diamond recently unearthed in …

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Juno Spacecraft in Orbit Around Jupiter

NASA’s Juno spacecraft conducts a close flyby of Jupiter’s Icy Moon Europa

An artist’s concept of the Juno spacecraft orbiting Jupiter. Photo credit: NASA As the Juno spacecraft approaches the moon Europa, it is expected to yield valuable science – and remarkable images – for NASA Established in 1958, the National Aeronautics and Space Administration (NASA) is an independent agency of the United States federal government that …

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Artificial intelligence reduces a quantum physics problem with 100,000 equations to just four equations

Artificial intelligence reduces a quantum physics problem with 100,000 equations to just four equations

A visualization of a mathematical apparatus used to capture the physics and behavior of electrons moving on a lattice. Each pixel represents a single interaction between two electrons. Until now, accurate mapping of the system required about 100,000 equations – one for each pixel. Using machine learning, the scientists reduced the problem to just four …

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subway station, geometric accuracy

Laser scanning technology measures the geometric accuracy of subway stations

In a study published in applied Sciencesresearchers have proposed an automatic assessment method based on 3D laser scanning technology to measure the geometric accuracy of subway stations. The method enables a highly precise and comprehensive geometric assessment of underground systems. To learn: Method for evaluating the geometric accuracy of subway stations based on 3D laser …

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Artist

Worries about space debris prompt NASA and Congress to take new action

NASA and the US Congress have joined the chorus of urgent action to reduce the threat from space debris. Large satellite constellations managed by companies such as SpaceXalong with a Russian anti-satellite test (ASAT) in November 2021 that threatened International Space Station numerous operations, are likely fueling these discussions because of concerns about space debris …

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