meteorobs : Message: (meteorobs) Early history of meteor ...
Interesting paper about the early history of trying to study and analyse meteor spectra and meteortrains by C. C. Trowbridge. Well worth a read from a historic ... ( Early history of meteor spectroscopy )
tech.groups.yahoo.com/group/meteorobs/message/41266
What is this cloudy spot on Mars?
io9
There are still a number of theories as to the origin of the cloud — it could be debris from a meteorimpact, a towering weather system, or perhaps just a trick of the light. You can see Jaeschke's animation of the anomaly to get a better sense of ...