Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. draqon

    Why you should devote your life to space

    draqon, Jul 15, 2008 ... 7 8 9
    Replies:
    178
    Views:
    5,774
    goose
    Jul 20, 2008
  2. paddoboy

    The Story of the Universe: : Tutorial :

    paddoboy, Oct 10, 2015 ... 7 8 9
    Replies:
    177
    Views:
    9,212
    paddoboy
    Oct 25, 2015
  3. utopian knight

    what is beyond the known universe?

    utopian knight, Oct 6, 2006 ... 7 8 9
    Replies:
    176
    Views:
    14,556
    kaneda
    Apr 24, 2009
  4. river

    How did the Earth capture the Moon ?

    river, Apr 26, 2020 ... 7 8 9
    Replies:
    174
    Views:
    7,882
    exchemist
    Jul 20, 2020
  5. draqon

    Should Mars be terraformed?

    draqon, Jul 7, 2008 ... 7 8 9
    Replies:
    170
    Views:
    11,151
    Enmos
    Nov 22, 2009
  6. paddoboy

    Why are things in space the shape that they are?

    paddoboy, May 11, 2020 ... 7 8 9
    Replies:
    167
    Views:
    7,168
    Write4U
    Aug 22, 2020
  7. Xylene

    Martian Settlement, 2090

    Xylene, Apr 27, 2009 ... 7 8 9
    Replies:
    164
    Views:
    17,049
    PieAreSquared
    May 7, 2009
  8. paddoboy

    Electromagnetic Drive Produces Thrust in Vacuum: NASA:

    paddoboy, May 5, 2015 ... 7 8 9
    Replies:
    163
    Views:
    12,507
    paddoboy
    May 2, 2016
  9. dkane75

    The Big Bang: Science's Greatest Blunder?

    dkane75, Dec 20, 2007 ... 7 8 9
    Replies:
    162
    Views:
    8,529
    Myles
    Dec 30, 2007
  10. kaneda

    What is space?

    kaneda, Sep 25, 2008 ... 6 7 8
    Replies:
    159
    Views:
    9,727
    AlphaNumeric
    Oct 8, 2008
  11. hansda
    Redirect

    Universe Expansion

    hansda, Aug 24, 2017 ... 6 7 8
    Replies:
    –
    Views:
    –
    N/A
  12. IceAgeCivilizations

    Deception of Big Bang Theory

    IceAgeCivilizations, Jan 24, 2007 ... 6 7 8
    Replies:
    154
    Views:
    6,925
    BenTheMan
    Feb 1, 2007
  13. Larry Johnson

    Can a hollow planet exist?

    Larry Johnson, Jun 10, 2013 ... 6 7 8
    Replies:
    152
    Views:
    20,972
    river
    Aug 11, 2013
  14. paddoboy

    LIGHT SAILS:

    paddoboy, Jan 26, 2015 ... 6 7 8
    Replies:
    150
    Views:
    7,525
    nebel
    Mar 24, 2015
  15. blobrana

    US spy satellite re-entry

    blobrana, Jan 26, 2008 ... 6 7 8
    Replies:
    150
    Views:
    13,908
    Billy T
    Mar 20, 2008
  16. FIARDO
    Locked

    Martian Alkaline Volcanic Rocks from French Rain of Meteorites of May 28, 2003,

    FIARDO, Nov 16, 2006 ... 6 7 8
    Replies:
    150
    Views:
    11,694
    James R
    Jun 30, 2007
  17. OilIsMastery

    The Expansion Tectonics of Europa

    OilIsMastery, Oct 2, 2008 ... 6 7 8
    Replies:
    148
    Views:
    8,030
    Trippy
    Oct 24, 2008
  18. paddoboy

    The History of the Universe in 8 minutes:

    paddoboy, Jul 25, 2015 ... 6 7 8
    Replies:
    147
    Views:
    7,785
    Kristoffer
    Jul 29, 2015
  19. orcot

    roswell aliens

    orcot, Apr 11, 2011 ... 6 7 8
    Replies:
    147
    Views:
    9,825
    gmilam
    May 9, 2011
  20. EmptyForceOfChi

    the universe is a sphear

    EmptyForceOfChi, Dec 17, 2005 ... 6 7 8
    Replies:
    147
    Views:
    6,292
    genep
    Dec 24, 2005
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