一项新研究发现，2024 年 5 月超级地磁暴影响下，地球高层大气与电离层发生了独特的变化。
gravity
Posted inEditors' Highlights
Ionospheric Changes Following the Geomagnetic Storm of May 2024
A new study finds that unique ionospheric changes occurred in the upper atmosphere in response to the May 2024 geomagnetic superstorm.
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Imaging Magma from Afar
Reservoirs of magma and fluids in the crust create gravity anomalies detectable by altimetry, which can help find submarine volcanoes and provide key insights into their depth, shape and volume.
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Core Movements Could Be Causing Tiny Shifts in Earth’s Spin Speed
Researchers use ancient eclipse data and new machine learning techniques to understand what processes changed the length of Earth’s days over the past 3,000 years.
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The Relatively Messy Problem with Lunar Clocks
Using Einstein’s theory of general relativity, physicists found that clocks on the Moon would run 56 microseconds faster than clocks on Earth. That finding will help future lunar missions navigate.
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Timing the Global Expansion on the Moon
A new analysis of the relation between randomly oriented linear gravity anomalies and two large craters on the Moon implies that the gravity anomalies formed over a long period of time.
Posted inResearch Spotlights
The Moon’s Tides Hint at a Melty Lunar Layer
New lunar gravity measurements support the idea that a partially molten mantle layer is sandwiched between the rest of the Moon’s mantle and its core.
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New Method Reveals Hidden Structures in Clear-Sky Vertical Motion
High-resolution satellite data reveal unexpected, highly heterogeneous vertical motions in the clear-sky atmosphere, with a new method proposed for measuring these motions.
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The Moon’s Mantle Did a Flip—and Scientists May Now Have Evidence
For decades, a lunar whodunit has puzzled scientists: Did the Moon’s internal layers flip during its formation? Old data might hold the evidence to solve this cold case.