Mark Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing 2 topics - 1 through 2 (of 2 total) Topic Voices Posts Last Post Nova in Hercules 1 2 3 Started by: Jeremy Shears in: Variable Stars 23 51 1 month ago Gary Poyner Video meteor spectroscopy Started by: Mark in: Meteors 2 3 4 years, 10 months ago Mark Viewing 2 topics - 1 through 2 (of 2 total)