Space hazard

Micrometeoroids

Tiny natural particles — grains of comet and asteroid dust — moving at tens of kilometres per second. They erode surfaces and can puncture spacecraft; together with orbital debris they define the impact hazard for spacecraft.

Environment & effects

Affects:Earth The Moon

Knowledge connections

Associated withOrbital Debris
AffectsEarth
AffectsThe Moon

Sources

Facts on this topic will be cited from these primary and reference sources.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.

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