Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. pluto2

    Is there really life on other planets?

    pluto2, Mar 13, 2009 ... 5 6 7
    Replies:
    126
    Views:
    12,103
    Parmenides
    Sep 1, 2010
  2. Aladdin

    The Big Bang: Where Did It Happen?

    Aladdin, Dec 15, 2011 ... 5 6 7
    Replies:
    124
    Views:
    20,223
    wellwisher
    Jan 22, 2012
  3. RajeshTrivedi

    Twin Paradox And Time Dilation

    RajeshTrivedi, Jul 9, 2015 ... 5 6 7
    Replies:
    122
    Views:
    4,586
    Q-reeus
    Jul 22, 2015
  4. Popcorn8636

    Can anything surpass the speed of light???

    Popcorn8636, Aug 27, 2002 ... 5 6 7
    Replies:
    121
    Views:
    12,775
    Anomalous
    Feb 2, 2006
  5. PsychoticEpisode

    Light - solid, liquid or gas?

    PsychoticEpisode, Nov 4, 2005 ... 5 6 7
    Replies:
    120
    Views:
    10,574
    exchemist
    Jun 25, 2015
  6. Nightshift

    Life Should be Common in the Universe, physicists say

    Nightshift, Mar 10, 2014 ... 5 6 7
    Replies:
    120
    Views:
    7,972
    origin
    Apr 17, 2014
  7. TruthSeeker

    We Are Not Alone

    TruthSeeker, Feb 16, 2009 ... 5 6 7
    Replies:
    120
    Views:
    8,484
    eburacum45
    Mar 13, 2009
  8. OilIsMastery

    Can Gravitational Bodies Grow?

    OilIsMastery, Sep 30, 2008 ... 5 6 7
    Replies:
    120
    Views:
    5,242
    Vkothii
    Oct 1, 2008
  9. wegs

    Is dark matter responsible for life to exist?

    wegs, Jul 12, 2019 ... 4 5 6
    Replies:
    118
    Views:
    4,401
    Seattle
    Jul 24, 2019
  10. Norsefire

    Interstellar and intergalactic travel

    Norsefire, Jan 4, 2008 ... 4 5 6
    Replies:
    118
    Views:
    7,468
    orcot
    Feb 6, 2008
  11. Eagle9

    How much time is needed for the time travel?

    Eagle9, Oct 16, 2014 ... 4 5 6
    Replies:
    117
    Views:
    6,071
    river
    Oct 30, 2014
  12. Norsefire

    The big bang is not logical

    Norsefire, Dec 13, 2007 ... 4 5 6
    Replies:
    117
    Views:
    8,777
    kaneda
    Apr 22, 2008
  13. amraam

    Big Bang Theory Is Bang Wrong

    amraam, Nov 12, 2001 ... 4 5 6
    Replies:
    117
    Views:
    9,733
    (Q)
    Jun 4, 2005
  14. btimsah

    Famous UFO In Astronauts Reflection (Huge Image!)

    btimsah, Apr 11, 2005 ... 4 5 6
    Replies:
    116
    Views:
    11,933
    Anomalous
    Jan 13, 2006
  15. paddoboy

    SPACE TRAVEL AND THE BENEFITS:

    paddoboy, Jan 26, 2015 ... 4 5 6
    Replies:
    113
    Views:
    6,322
    paddoboy
    Feb 19, 2015
  16. Saint

    Does cosmology answer why the universe exist?

    Saint, Nov 9, 2020 ... 4 5 6
    Replies:
    112
    Views:
    14,665
    Pinball1970
    Jan 14, 2024
  17. Harmonic_Subset

    Big Bang Theory Violates First Law of Thermodynamics

    Harmonic_Subset, Aug 27, 2020 ... 4 5 6
    Replies:
    112
    Views:
    6,071
    arfa brane
    Sep 15, 2020
  18. RajeshTrivedi

    Dark Energy – Required to explain a plausible mistake ?

    RajeshTrivedi, Aug 16, 2014 ... 4 5 6
    Replies:
    112
    Views:
    10,735
    paddoboy
    Sep 8, 2014
  19. S.A.M.

    Expanding Universe

    S.A.M., May 9, 2007 ... 4 5 6
    Replies:
    112
    Views:
    5,467
    Read-Only
    May 13, 2007
  20. BdS

    Cosmology is in crisis – but not for the reason you may think

    BdS, Jan 8, 2016 ... 4 5 6
    Replies:
    109
    Views:
    5,417
    paddoboy
    Jan 12, 2016
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