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Gravitational wave testbed repurposed as comet dust detector

26 April 2017 Stephen Clark

In the final months of Europe’s LISA Pathfinder mission, scientists have found an unexpected use for the trailblazing testbed for a future gravitational wave observatory by tracking the tiny dings made by microscopic particles that strike the spacecraft in deep space, exploiting the impacts to learn about the population of dust grains cast off by comets and asteroids across the solar system.

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Small impacts are reworking the Moon’s soil faster than scientists thought

13 October 2016 Astronomy Now

The Moon’s surface is being “gardened” — churned by small impacts — more than 100 times faster than scientists previously thought. This means that lunar surface features believed to be young are perhaps even younger than assumed. It also means that any structures placed on the Moon as part of human expeditions will need better protection.