Chris Hooker Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing 3 topics - 1 through 3 (of 3 total) Topic Voices Posts Last Post Mercury’s socium tail Started by: Dawson in: Mercury 3 5 1 year, 8 months ago Chris Hooker Why do we still show the images upside down? Started by: Peter Tickner in: Jupiter 6 8 3 years, 3 months ago Peter Tickner Does it get darker after the end of Astronomical twilight? Started by: Tim Haymes in: Atmospheric Phenomena 8 9 5 years, 8 months ago David Arditti Viewing 3 topics - 1 through 3 (of 3 total)