Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. SnowsportsSid

    Mars in the next 50 years

    SnowsportsSid, Feb 26, 2011 ... 2 3
    Replies:
    57
    Views:
    6,701
    Bells
    Mar 16, 2011
  2. Alan McDougall

    In the absence of the sun, how long would it take for earth freeze solid

    Alan McDougall, Jul 21, 2010 ... 2 3
    Replies:
    57
    Views:
    4,883
    Alan McDougall
    Sep 6, 2010
  3. John J. Bannan

    Planets: Why do we need to visit them?

    John J. Bannan, Jun 22, 2007 ... 2 3
    Replies:
    57
    Views:
    3,484
    Oli
    Jul 10, 2007
  4. craterchains (Norval

    Why no Luna orbital camera?

    craterchains (Norval, Sep 26, 2004 ... 2 3
    Replies:
    57
    Views:
    3,738
    Ophiolite
    Nov 24, 2004
  5. Zarkov

    Errr, Why Does the Moon Orbit the Eath ?

    Zarkov, Apr 27, 2004 ... 2 3
    Replies:
    57
    Views:
    2,586
    RawThinkTank
    May 2, 2004
  6. MarkCGreer

    New Theory Suggests the Laws of Physics Evolved

    MarkCGreer, Mar 7, 2012 ... 2 3
    Replies:
    58
    Views:
    3,426
    thestateofmark
    Mar 20, 2012
  7. BenTheMan

    Fermi Paradox and Advanced Civilizations.

    BenTheMan, Jul 30, 2009 ... 2 3
    Replies:
    58
    Views:
    5,693
    Nasor
    Sep 2, 2009
  8. Trippy

    SN Refsdale

    Trippy, Mar 7, 2015 ... 2 3
    Replies:
    59
    Views:
    4,119
    paddoboy
    Mar 9, 2016
  9. Arne Saknussemm

    So What If We Actually Are Alone In The Universe?

    Arne Saknussemm, Jan 15, 2014 ... 2 3
    Replies:
    59
    Views:
    3,387
    paddoboy
    Jan 31, 2014
  10. Aladdin

    Time Reborn: a new theory of time

    Aladdin, Jul 30, 2013 ... 2 3
    Replies:
    59
    Views:
    5,581
    wegs
    Aug 6, 2013
  11. RJBeery

    Spontaneous matter?

    RJBeery, Oct 3, 2012 ... 2 3
    Replies:
    59
    Views:
    3,985
    Neverfly
    Oct 22, 2012
  12. Monkeymia

    Do you Seti crunch?

    Monkeymia, Nov 29, 2001 ... 2 3
    Replies:
    59
    Views:
    5,242
    SPEEDYJ
    Dec 5, 2001
  13. Magical Realist

    Why does Jupiter have a Great Red Spot?

    Magical Realist, Aug 25, 2014 ... 2 3 4
    Replies:
    60
    Views:
    4,120
    paddoboy
    Sep 6, 2014
  14. pluto2

    Will travel to the stars ever be possible?

    pluto2, Jan 8, 2014 ... 2 3 4
    Replies:
    60
    Views:
    4,146
    paddoboy
    Jan 15, 2014
  15. Dredd

    Machines Evolved Into Microbes, Then ...

    Dredd, Aug 17, 2011 ... 2 3 4
    Replies:
    60
    Views:
    4,780
    wellwisher
    Nov 17, 2011
  16. Nebula

    Questions about the Big Bang

    Nebula, Apr 3, 2003 ... 2 3 4
    Replies:
    60
    Views:
    2,587
    laura b
    May 17, 2003
  17. ThazzarBaal

    Copernican Heresy

    ThazzarBaal, Feb 8, 2023 ... 2 3 4
    Replies:
    61
    Views:
    4,159
    exchemist
    Feb 18, 2023
  18. paddoboy

    Humans to Mars a Principle of Space Exploration:

    paddoboy, Sep 8, 2014 ... 2 3 4
    Replies:
    61
    Views:
    4,050
    river
    Oct 27, 2014
  19. ULTRA

    S.E.T.I. use film Battle Los Angeles to depict Aliens

    ULTRA, Mar 12, 2011 ... 2 3 4
    Replies:
    61
    Views:
    6,669
    Billy T
    Apr 28, 2011
  20. Alan McDougall

    The vastness of the universe

    Alan McDougall, Jun 15, 2010 ... 2 3 4
    Replies:
    61
    Views:
    5,589
    CptBork
    Aug 27, 2010
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