Astronomy, Exobiology, & Cosmology

amateur astronomy, astrophysics, exoscience

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  1. blobrana

    Advanced Crew Transportation System

    blobrana, Jul 23, 2008
    Replies:
    0
    Views:
    433
    blobrana
    Jul 23, 2008
  2. centaurus

    Advanced Astronomy and Astrophysics

    centaurus, Aug 17, 2016
    Replies:
    4
    Views:
    388
    origin
    Aug 17, 2016
  3. Lucas

    adiabatic system

    Lucas, Sep 21, 2003
    Replies:
    11
    Views:
    721
    bigjnorman
    Sep 25, 2003
  4. JM123

    Actual size of black holes

    JM123, Feb 23, 2012
    Replies:
    13
    Views:
    2,726
    OnlyMe
    Mar 17, 2012
  5. kmguru

    Actual Age of the Universe

    kmguru, Jun 9, 2007 ... 2 3
    Replies:
    54
    Views:
    5,924
    wilgory
    Jun 26, 2007
  6. taichitarot

    Activity Discussing a Moon Mine

    taichitarot, Apr 23, 2012
    Replies:
    14
    Views:
    1,639
    Rouge
    May 12, 2012
  7. wet1

    Across the Visible

    wet1, Sep 11, 2001
    Replies:
    0
    Views:
    1,074
    wet1
    Sep 11, 2001
  8. PΛRΛDIGM®

    ACO 3627 -"Great Attractor" Amazing!

    PΛRΛDIGM®, Jan 24, 2005
    Replies:
    0
    Views:
    692
    PΛRΛDIGM®
    Jan 24, 2005
  9. blobrana

    Accretion process for high-mass stars

    blobrana, Mar 7, 2007
    Replies:
    0
    Views:
    545
    blobrana
    Mar 7, 2007
  10. Carcano

    Accretion of the Solar System?

    Carcano, Feb 19, 2015 ... 2
    Replies:
    23
    Views:
    2,082
    Carcano
    Feb 23, 2015
  11. wet1

    Accretion Disk Simulation

    wet1, Sep 27, 2002
    Replies:
    0
    Views:
    694
    wet1
    Sep 27, 2002
  12. Ultron

    Acceleration relation found among spiral and irregular galaxies challenges current understanding of

    Ultron, Sep 21, 2016
    Replies:
    8
    Views:
    712
    PhysBang
    Sep 22, 2016
  13. Vortexx

    Acceleration rate must decrease at some point?

    Vortexx, Sep 28, 2003
    Replies:
    10
    Views:
    775
    Mark
    Oct 21, 2003
  14. §lîñk€¥™

    Acceleration and special relativity?

    §lîñk€¥™, Jan 8, 2003 ... 2
    Replies:
    21
    Views:
    1,262
    §lîñk€¥™
    Jan 14, 2003
  15. Pete

    Accelerating expansion and white holes

    Pete, Sep 6, 2004
    Replies:
    5
    Views:
    917
    eburacum45
    Sep 12, 2004
  16. roknjohn

    Accelerated Expansion Argument

    roknjohn, Feb 6, 2008
    Replies:
    5
    Views:
    828
    Fraggle Rocker
    Feb 8, 2008
  17. timojin

    Absorption of light energy

    timojin, Mar 20, 2017 ... 2
    Replies:
    23
    Views:
    1,634
    timojin
    Mar 22, 2017
  18. DaveC426913

    About Trappist-1

    DaveC426913, Feb 27, 2017 ... 2
    Replies:
    23
    Views:
    2,300
    Janus58
    Mar 8, 2017
  19. krystof

    About the colonizer craze: when should I pack my bags for Mars? Etc.

    krystof, Jun 1, 2008 ... 2
    Replies:
    25
    Views:
    1,862
    eburacum45
    Jun 7, 2008
  20. bigjnorman

    about space time diagrams

    bigjnorman, Sep 23, 2003
    Replies:
    15
    Views:
    1,007
    Mark
    Sep 29, 2003
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