Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. wet1

    A Lunar Rille

    wet1, Oct 31, 2002
    Replies:
    15
    Views:
    5,089
    Novacane
    Oct 14, 2005
  2. RJBeery

    Event Horizons in General Relativity

    RJBeery, Apr 17, 2019 ... 3 4 5
    Replies:
    92
    Views:
    5,092
    RJBeery
    Apr 26, 2019
  3. birch

    How large can planets be?

    birch, Feb 1, 2011 ... 2 3
    Replies:
    47
    Views:
    5,114
    James R
    Feb 8, 2011
  4. whowantstoknow

    What is tachyeon (did i spell it right?) + some other interesting stuff

    whowantstoknow, Jul 17, 2000
    Replies:
    1
    Views:
    5,115
    Crisp
    Jul 17, 2000
  5. The God

    Dark Matter : Is it science?

    The God, Mar 8, 2017 ... 3 4 5
    Replies:
    80
    Views:
    5,123
    exchemist
    Mar 12, 2017
  6. Xelasnave.1947

    Narrow Band Imaging

    Xelasnave.1947, Aug 25, 2018 ... 2 3 4
    Replies:
    70
    Views:
    5,148
    Write4U
    Feb 24, 2019
  7. quantum_wave

    QWC's niche

    quantum_wave, Oct 20, 2008 ... 2 3
    Replies:
    54
    Views:
    5,150
    quantum_wave
    Nov 25, 2008
  8. Saint

    Why distant star's light can reach us?

    Saint, Jun 24, 2022 ... 2
    Replies:
    28
    Views:
    5,155
    Beaconator
    Sep 10, 2022
  9. darksidZz

    Is Earth The Only Planet With Life?

    darksidZz, Apr 25, 2007 ... 2 3 4
    Replies:
    62
    Views:
    5,164
    Athelwulf
    May 6, 2007
  10. The God

    Cosmic Censorship

    The God, Mar 30, 2017 ... 2 3
    Replies:
    57
    Views:
    5,167
    Write4U
    Apr 30, 2017
  11. Captain Kremmen

    Mars. The Beautiful Planet.

    Captain Kremmen, Apr 4, 2008 ... 2 3 4
    Replies:
    69
    Views:
    5,182
    blobrana
    Jul 1, 2008
  12. YinyangDK

    How the univers came to be

    YinyangDK, Feb 14, 2008 ... 3 4 5
    Replies:
    89
    Views:
    5,188
    losfomoT
    Feb 22, 2008
  13. Cycloptia
    Locked

    Light has mass?

    Cycloptia, Jun 10, 2001 ... 2
    Replies:
    31
    Views:
    5,193
    James R
    Aug 23, 2011
  14. rcscwc

    Why universe can be infinite

    rcscwc, Dec 27, 2011 ... 2 3 4
    Replies:
    65
    Views:
    5,203
    ughaibu
    Feb 3, 2012
  15. Deep Science

    Now is a good time to talk about James webb Space Telescope.

    Deep Science, Oct 16, 2021 ... 2
    Replies:
    20
    Views:
    5,210
    Michael 345
    Dec 27, 2021
  16. dumbest man on earth

    ...replacement for ISS?

    dumbest man on earth, Apr 9, 2015 ... 3 4 5
    Replies:
    81
    Views:
    5,214
    R1D2
    May 10, 2015
  17. naeema

    what is hyperspace?

    naeema, May 12, 2003 ... 3 4 5
    Replies:
    87
    Views:
    5,227
    gentle
    Sep 10, 2004
  18. OilIsMastery

    Can Gravitational Bodies Grow?

    OilIsMastery, Sep 30, 2008 ... 5 6 7
    Replies:
    120
    Views:
    5,238
    Vkothii
    Oct 1, 2008
  19. paddoboy
    Locked

    Will the Universe Run Out Of Energy?

    paddoboy, Mar 31, 2015 ... 2 3 4
    Replies:
    71
    Views:
    5,239
    James R
    Apr 7, 2015
  20. Monkeymia

    Do you Seti crunch?

    Monkeymia, Nov 29, 2001 ... 2 3
    Replies:
    59
    Views:
    5,248
    SPEEDYJ
    Dec 5, 2001
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