Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. Dinosaur

    Speed of eclipse shadow?

    Dinosaur, Mar 31, 2006
    Replies:
    4
    Views:
    8,634
    tsmid
    Apr 27, 2006
  2. dkane75

    The Big Bang: Science's Greatest Blunder?

    dkane75, Dec 20, 2007 ... 7 8 9
    Replies:
    162
    Views:
    8,525
    Myles
    Dec 30, 2007
  3. TruthSeeker

    We Are Not Alone

    TruthSeeker, Feb 16, 2009 ... 5 6 7
    Replies:
    120
    Views:
    8,465
    eburacum45
    Mar 13, 2009
  4. river

    Moon has many abnomalies

    river, Sep 25, 2011 ... 8 9 10
    Replies:
    182
    Views:
    8,462
    leopold
    Sep 30, 2011
  5. Fil

    The end of space

    Fil, Feb 11, 2001 ... 3 4 5
    Replies:
    85
    Views:
    8,429
    OmniPotency
    Jul 27, 2004
  6. mananmater

    Mars or the Moon????

    mananmater, Dec 21, 2009 ... 4 5 6
    Replies:
    101
    Views:
    8,399
    orcot
    Feb 26, 2010
  7. tashja

    Pushing space

    tashja, Apr 1, 2011 ... 2 3
    Replies:
    46
    Views:
    8,371
    Dywyddyr
    Apr 10, 2011
  8. river

    Big Dipper star fading out ?

    river, Feb 10, 2013 ... 2 3
    Replies:
    51
    Views:
    8,344
    Rhaedas
    Feb 17, 2013
  9. aimee

    Mars coordinate systems

    aimee, Feb 8, 2006
    Replies:
    15
    Views:
    8,321
    aimee
    Feb 13, 2006
  10. D H

    Posting guidelines for the astronomy, exobiology & cosmology sub forum

    D H, Jun 19, 2009
    Replies:
    7
    Views:
    8,303
    benjifrank
    Jul 10, 2013
  11. Dinosaur

    Planet 180 degrees from earth in same orbit?

    Dinosaur, May 9, 2009 ... 2 3
    Replies:
    49
    Views:
    8,265
    DaveC426913
    May 13, 2018
  12. Cris

    Multiple Big Bangs and their Origin

    Cris, Jan 2, 2000 ... 2 3
    Replies:
    41
    Views:
    8,172
    Troybarnes
    Jan 29, 2012
  13. RealityCheck

    HYPOTHESIS: 'Recession' & 'Redshift' & Dark Matter Variations Over Time

    RealityCheck, Mar 12, 2012 ... 3 4 5
    Replies:
    85
    Views:
    8,144
    Undefined
    Dec 14, 2013
  14. markl323

    Please help me understand the expansion of space

    markl323, Jan 14, 2011 ... 3 4 5
    Replies:
    89
    Views:
    8,038
    esbo
    Jul 20, 2011
  15. OilIsMastery

    The Expansion Tectonics of Europa

    OilIsMastery, Oct 2, 2008 ... 6 7 8
    Replies:
    148
    Views:
    8,024
    Trippy
    Oct 24, 2008
  16. Tiassa

    Postcard from Cassini

    Tiassa, Nov 28, 2012 ... 2
    Replies:
    34
    Views:
    8,019
    Trippy
    Mar 26, 2014
  17. nfdouglas

    Galaxy Formation, Earth Pole Switching and Global Warming

    nfdouglas, Feb 9, 2007
    Replies:
    8
    Views:
    8,001
    Montec
    Feb 18, 2007
  18. sderenzi

    Asteroid Belt - Exploded Planet?!

    sderenzi, Aug 28, 2006 ... 2
    Replies:
    39
    Views:
    7,974
    gerom
    Mar 31, 2016
  19. Nightshift

    Life Should be Common in the Universe, physicists say

    Nightshift, Mar 10, 2014 ... 5 6 7
    Replies:
    120
    Views:
    7,968
    origin
    Apr 17, 2014
  20. TruthSeeker

    Computer Model Shows the Universe is Alive!!! (???)

    TruthSeeker, Aug 14, 2007 ... 2 3
    Replies:
    46
    Views:
    7,921
    geist959
    Jul 21, 2010
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