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
Knowledge connections
- Associated withOrbital Debris
- AffectsEarth
- AffectsThe Moon
Sources
The primary and reference sources this topic draws on.
- 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.