This conversation with Don Hladiuk is about the planetary geology focusing on meteoroids, meteors, and meteorites.  How do you recognize a space rock from an Earth rock?  Where do meteorites come from?  How are meteorites brought back from space?  What big events happened in the past?  What do you do if you see a fireball? If you'd like to know the answers to all of these questions, join us for an out of this world discussion with "Spaceman". May this exchange serve to expand your geological knowledge on the go.  For more information go to www.stoneconsulting.info.  To report a fireball go to www.imo.net/observations/fireballs/fireball-report-programCitation:  Hladiuk, Don. Meteoroids, Meteors, and Meteorites.  Unpublished.