Peter Birtwhistle 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 ArtSat venting fuel? Started by: Peter Birtwhistle in: Atmospheric Phenomena 6 11 1 month, 2 weeks ago Nick James Identification of artificial satellites / junk? Started by: Tim Haymes in: General Discussion 4 7 6 years ago Peter Birtwhistle Viewing 2 topics - 1 through 2 (of 2 total)