Space Science
New research suggests the Amaterasu particle, one of the most energetic cosmic rays detected, could be an ultraheavy atomic nucleus rather than a proton. The findings, from scientists at Penn State, were published in Physical Review Letters. They indicate such nuclei could retain extreme energy over vast distances in space.
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Astronomers have outlined a strategy to detect closely orbiting supermassive black hole binaries by searching for repeating flashes of magnified starlight caused by gravitational lensing.
Scientists propose that explosive volcanic eruptions billions of years ago transported water from Mars's interior to its equatorial regions, forming thick ice layers beneath the surface. This mechanism explains radar-detected ice in the planet's hottest area without relying on shifts in Mars's axial tilt. The discovery could aid future human missions by providing accessible water resources.
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A new analysis indicates that the moon's South Pole-Aitken basin, its oldest and largest crater, likely formed from an asteroid impact originating from the north rather than the south. This finding challenges previous assumptions about the moon's early history. The discovery could enhance the value of NASA's upcoming Artemis III mission to the basin's rim.