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Forum: Astronomy

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  1. Sticky Thread Sticky: The ULTIMATE Astronomy Quiz 2

    Started by antoniseb, 2017-Aug-01 11:41 AM
    2 Pages
    1 2
    • Replies: 53
    • Views: 10,376
    2018-Apr-14, 04:06 PM Go to last post
  2. Sticky Thread Sticky: The ULTIMATE astronomy quiz

    Started by Glom, 2005-Jun-19 12:19 AM
    176 Pages
    1 2 3 ... 176
    • Replies: 5,250
    • Views: 351,109
    2017-Jul-28, 07:46 PM Go to last post
    • Replies: 8
    • Views: 1,411
    2018-Dec-17, 01:00 PM Go to last post
  1. Gaia's HR diagram

    Started by parallaxicality, 2018-Dec-10 11:23 PM
    • Replies: 5
    • Views: 162
    2018-Dec-16, 02:04 PM Go to last post
  2. Question Negative mass? say what?

    Started by Roger E. Moore, 2018-Dec-06 03:11 PM
    dark energy, dark matter, missing mass, negative mass
    • Replies: 10
    • Views: 419
    2018-Dec-15, 10:42 PM Go to last post
    • Replies: 2
    • Views: 274
    2018-Dec-14, 10:47 PM Go to last post
  3. Cool Geminid Meteor Shower Peaks December 13-14

    Started by Centaur, 2018-Dec-08 09:38 PM
    • Replies: 1
    • Views: 86
    2018-Dec-14, 09:11 PM Go to last post
  4. Disintegrating Planets - some recent news

    Started by Roger E. Moore, 2018-Jul-30 07:24 PM
    2 Pages
    1 2
    • Replies: 33
    • Views: 1,824
    2018-Dec-14, 03:34 PM Go to last post
  5. More black hole mergers detected

    Started by Swift, 2018-Dec-04 09:18 PM
    • Replies: 10
    • Views: 310
    2018-Dec-14, 03:31 PM Go to last post
  6. Cool Lunar X - 2018 DEC 14

    Started by Centaur, 2018-Dec-10 08:38 PM
    • Replies: 1
    • Views: 60
    2018-Dec-13, 05:33 AM Go to last post
  7. Cool December New Moon Spotting

    Started by Centaur, 2018-Dec-05 09:51 PM
    • Replies: 2
    • Views: 95
    2018-Dec-11, 03:54 AM Go to last post
  8. How often do we get close passages?

    Started by Tom Mazanec, 2018-Apr-12 02:43 PM
    2 Pages
    1 2
    1 Deleted Post(s)
    • Replies: 45
    • Views: 3,719
    2018-Dec-10, 11:55 PM Go to last post
  9. Interstellar Comet

    Started by tony873004, 2017-Oct-25 07:19 AM
    5 Pages
    1 2 3 ... 5
    • Replies: 145
    • Views: 11,296
    2018-Dec-10, 11:48 PM Go to last post
  10. Comet Wirtanen

    Started by Superluminal, 2018-Sep-04 02:27 AM
    • Replies: 20
    • Views: 962
    2018-Dec-09, 11:57 PM Go to last post
  11. Cool Jupiter as a Morning Star

    Started by Centaur, 2018-Dec-09 04:29 PM
    • Replies: 0
    • Views: 69
    2018-Dec-09, 04:29 PM Go to last post
  12. Would someone write this Wikipedia article?

    Started by Tom Mazanec, 2018-Dec-05 06:39 PM
    • Replies: 6
    • Views: 258
    2018-Dec-09, 12:08 PM Go to last post
  13. How supermassive black holes might have formed

    Started by Predrag3141, 2017-May-31 11:43 AM
    • Replies: 9
    • Views: 725
    2018-Dec-05, 05:03 PM Go to last post
  14. Cool Mercury as Turn of the Year Morning Star

    Started by Centaur, 2018-Dec-01 05:23 PM
    • Replies: 0
    • Views: 128
    2018-Dec-01, 05:23 PM Go to last post
    • Replies: 34
    • Views: 2,653
    2018-Nov-29, 02:12 PM Go to last post
  15. Is Planet Nine almost certain, probable, possible or unlikely?

    Started by Tom Mazanec, 2016-Jun-13 04:01 PM
    4 Pages
    1 2 3 ... 4
    1 Deleted Post(s)
    • Replies: 101
    • Views: 15,677
    2018-Nov-28, 03:16 PM Go to last post
  16. Talking Tau Ceti, the story so far

    Started by Roger E. Moore, 2018-Jul-26 06:13 PM
    exoplanets, science fiction, tau ceti
    • Replies: 4
    • Views: 489
    2018-Nov-27, 03:18 PM Go to last post
  17. Gaia DR2: Milky Way open clusters

    Started by selden, 2018-Nov-24 04:15 PM
    • Replies: 3
    • Views: 214
    2018-Nov-26, 06:41 PM Go to last post

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