Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. kaneda

    What is space?

    kaneda, Dec 3, 2007 ... 3 4 5
    Replies:
    86
    Views:
    3,805
    kaneda
    Dec 10, 2007
  2. darksidZz

    Do Photons Have Mass - Yes or No?

    darksidZz, May 11, 2007 ... 3 4 5
    Replies:
    86
    Views:
    4,984
    1100f
    May 15, 2007
  3. RealityCheck

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

    RealityCheck, Mar 12, 2012 ... 3 4 5
    Replies:
    85
    Views:
    8,050
    Undefined
    Dec 14, 2013
  4. Sky

    Aliens on earth

    Sky, Oct 21, 2004 ... 3 4 5
    Replies:
    85
    Views:
    4,886
    Starthane Xyzth
    Nov 10, 2004
  5. Fil

    The end of space

    Fil, Feb 11, 2001 ... 3 4 5
    Replies:
    85
    Views:
    8,422
    OmniPotency
    Jul 27, 2004
  6. paddoboy

    Is Hawking any closer to solving the puzzle of black holes?

    paddoboy, Aug 28, 2015 ... 3 4 5
    Replies:
    84
    Views:
    5,703
    paddoboy
    Sep 15, 2015
  7. sigurdV

    Survival of the human race

    sigurdV, Jun 3, 2012 ... 3 4 5
    Replies:
    84
    Views:
    3,990
    sigurdV
    Jun 15, 2012
  8. Cyperium

    Shape of the universe

    Cyperium, Jun 7, 2008 ... 3 4 5
    Replies:
    84
    Views:
    4,381
    Cyperium
    Aug 3, 2008
  9. wegs

    Twelve reasons we haven't found aliens

    wegs, Feb 5, 2020 ... 3 4 5
    Replies:
    83
    Views:
    3,553
    exchemist
    Feb 21, 2020
  10. Daecon

    Question about Black Hole temperature.

    Daecon, Mar 15, 2015 ... 3 4 5
    Replies:
    83
    Views:
    3,334
    paddoboy
    Mar 21, 2015
  11. zgmc
    Redirect

    A New Breakthrough Theory of the Big Bang

    zgmc, Oct 29, 2014 ... 3 4 5
    Replies:
    –
    Views:
    –
    N/A
  12. Anomalous
    Locked

    Blackhole at the center of each galaxy, think again

    Anomalous, Jun 7, 2005 ... 3 4 5
    Replies:
    83
    Views:
    7,429
    James R
    Jun 29, 2011
  13. Vega

    Titan holds vast oil reserves

    Vega, Mar 19, 2008 ... 3 4 5
    Replies:
    83
    Views:
    2,837
    eburacum45
    Mar 22, 2008
  14. danshawen

    Help Us Stay Informed on Mainstream Cosmology

    danshawen, Nov 18, 2015 ... 3 4 5
    Replies:
    81
    Views:
    4,342
    PhysBang
    Nov 29, 2015
  15. dumbest man on earth

    ...replacement for ISS?

    dumbest man on earth, Apr 9, 2015 ... 3 4 5
    Replies:
    81
    Views:
    5,196
    R1D2
    May 10, 2015
  16. Vega

    What really did happen to Beagle 2???

    Vega, Jul 22, 2006 ... 3 4 5
    Replies:
    81
    Views:
    5,449
    draqon
    Oct 16, 2006
  17. Seattle

    How long do you think humans will be around?

    Seattle, Dec 16, 2017 ... 3 4 5
    Replies:
    80
    Views:
    6,473
    sculptor
    Jun 4, 2018
  18. The God

    Dark Matter : Is it science?

    The God, Mar 8, 2017 ... 3 4 5
    Replies:
    80
    Views:
    5,101
    exchemist
    Mar 12, 2017
  19. Robittybob1

    How Do they Know ours is a Zero Energy Universe?

    Robittybob1, Dec 15, 2011 ... 3 4 5
    Replies:
    80
    Views:
    13,055
    Robittybob1
    Dec 19, 2011
  20. BennyF

    Deep-space communications relay stations

    BennyF, Sep 16, 2011 ... 3 4 5
    Replies:
    80
    Views:
    4,373
    Billy T
    Sep 23, 2011
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