21. Most meteoroids that cause meteors are about the size of a grain of sand. 22. Their abundance in meteoroid materials is relatively higher. 23. On October 7, 2008 the meteoroid 2008 TC3 exploded above the Nubian Desert. 24. He questioned witnesses of meteoroid detonations or bolides and organized and financed searching expeditions. 25. The so-called Leonid stream of meteoroids produces wonderful displays about every 33 years. 26. Such information may lead to improved meteoroid protection for future space stations, Ailor said. 27. _What is the likelihood that a meteoroid from one planet collides with another planet? 28. Meteoroids contain iron, nickel and silica.29. Earth moves through the meteoroid stream of particles left from the passages of a comet. 30. The smallest known near-Earth meteoroid is with an absolute magnitude of 33.2
