Qeexitaanka qaamuuska ereyga "micrometeor" waa meteoroid yar ama qayb walxo oo ka soo gasha jawiga dhulka meel bannaan oo gubanaya khilaaf ka yimaada hawada. Qurubyadani waxay caadi ahaan ka yar yihiin 1 millimitir cabbir ahaan wayna adkaan kartaa in la ogaado, laakiin waxay weli waxyeello u geysan karaan dayax gacmeedyada ama dayax gacmeedyada. Micrometeoroids waxa kale oo loo yaqaan boodhka hawada sare ama boodhka cosmic.