Two valleys extending away from a giant crater suggest that upcoming Artemis missions are more likely to sample ancient lunar terrain than impactor material.
Jonathan O’Callaghan
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Human Activities Might Create Temporary Atmospheres on the Moon
Outgassing could pose problems for long-term habitation of the Moon, including health hazards for astronauts, hindrances for electronics, and hampered scientific study.
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Another Ring of Objects Might Exist in the Outer Solar System
A search for a new target for NASA’s New Horizons spacecraft suggests that space beyond the Kuiper Belt could be an unexpectedly crowded place.
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The Origin of the Moon’s Thin Atmosphere Might Be Tiny Impacts
Minuscule meteoroids slamming into the lunar surface could be kicking up most of the atoms that make up the lunar exosphere.
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Parts of Mars Might Be Younger Than We Thought
Data from InSight’s seismometer suggest more impactors strike the Red Planet than expected.
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A Sugar Coating for Arrokoth
A Kuiper Belt object might contain ribose and glucose on its surface—the same elements that could have seeded life on Earth.
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Magnetic Barriers Might Explain Mysterious Hot Jupiters
Hot Jupiters might end up very close to stars because a magnetic field halts their progress—and future observations could confirm the idea.