John Cook Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing 17 topics - 1 through 17 (of 17 total) Topic Voices Posts Last Post Brightest Gamma Ray Explosion Started by: Bill Barton in: Deep Sky 2 2 1 year, 8 months ago John Cook 2021 – how was it for you? Started by: Jeremy Shears in: General Discussion 9 9 2 years, 11 months ago John Cook Sky and Telescope Renewal Started by: Nick Quinn in: General Discussion 4 6 3 years, 2 months ago John Cook Do sunspots have a “proper motion”? Started by: Steve Holmes in: Sun 3 5 3 years, 4 months ago Steve Holmes Photoacoustic effect Started by: Steve Harvey in: General Discussion 5 6 3 years, 10 months ago Callum Potter Feb JBAA Started by: Paul Anthony Brierley in: General Discussion 7 11 3 years, 10 months ago Paul Anthony Brierley 2020 – how was it for you? Started by: Jeremy Shears in: General Discussion 14 14 3 years, 11 months ago John Cook Solar Observing in Winter Started by: Peter Meadows in: Sun 3 3 4 years ago John Cook New sunspot Started by: Daryl Dobbs in: Sun 6 8 4 years, 6 months ago Daryl Dobbs Huge atmospheric experiment starting Started by: Alan Snook in: Atmospheric Phenomena 8 10 4 years, 9 months ago Dawson BAA Out of London meeting, Durham Univ ~1990-93? Started by: Derek Robson in: BAA Events and News 4 11 4 years, 10 months ago Derek Robson Geminid maximum radio detection Started by: Colin Briden in: Meteors 3 4 5 years ago Colin Briden Starlink satellites detected by radio reflection Started by: Nick Quinn in: Radio Astronomy 3 4 5 years, 1 month ago Nick Quinn A Life Time of Astronomical Observations Started by: Dawson in: General Discussion 3 5 5 years, 4 months ago Dawson Solar cycle & meteor rates Started by: Jeremy Shears in: Meteors 3 3 5 years, 9 months ago Bill Ward Meteor back scatter radio antenna Started by: Eric Watkins in: General Discussion 3 8 5 years, 10 months ago Eric Watkins 2018 – how was it for you? Started by: Jeremy Shears in: General Discussion 11 11 5 years, 11 months ago John Cook Viewing 17 topics - 1 through 17 (of 17 total)