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Space: Astronomy and Astrophysics

Exploring the wonders of the universe.

6,042 topics in this forum

  1. In Memoriam 1 2 3 4 10

    • 247 replies
    • 58,031 views
  2. How to Observe the Sun Safely

    • 0 replies
    • 14,852 views
  3. The Earth From Space 1 2 3 4 27

    • 664 replies
    • 125,207 views
  4. Is there a center of the universe? 1 2 3 4 16

    • 383 replies
    • 14,704 views
  5. Why Atmospheres of Stars Lack Metals? 1 2 3 4 14

    • 344 replies
    • 12,428 views
  6. NASA Astronomy Picture of the Day 1 2 3 4 14

    • 338 replies
    • 45,854 views
  7. Meteor Explodes over Russia. dozens injured.. 1 2 3 4 12

    • 291 replies
    • 17,595 views
  8. Studying the Sun 1 2 3 4 10

    • 240 replies
    • 34,734 views
  9. Hawking Says Time-Travel is Possible. 1 2 3 4 10

    • 229 replies
    • 14,802 views
  10. Why is the Universe Dark? 1 2 3 4 9

    • 211 replies
    • 13,501 views
  11. Black Holes & Quasars 1 2 3 4 9

    • 203 replies
    • 36,080 views
  12. Exoplanets - Planets Beyond Our Solar System 1 2 3 4 7

    • 164 replies
    • 26,682 views
    • 158 replies
    • 11,809 views
    • 132 replies
    • 9,199 views
  13. First evidence of other universes that exist 1 2 3 4 6

    • 128 replies
    • 16,559 views
  14. The Universe is rotating 1 2 3 4 6

    • 127 replies
    • 10,806 views
  15. Mathematicians Offer Unified Theory of Dark M 1 2 3 4 6

    • 126 replies
    • 16,957 views
  16. Mars & Life creation in Universe 1 2 3 4 5

    • 122 replies
    • 10,125 views
  17. Quantum equation predicts no big bang 1 2 3 4 5

    • 120 replies
    • 9,598 views
    • 118 replies
    • 14,944 views
  18. Mystery of the Universe's Expansion Rate 1 2 3 4 5

    • 118 replies
    • 2,586 views
  19. gama ray bursts from black hole and 2012 1 2 3 4 5

    • 114 replies
    • 11,214 views
    • 114 replies
    • 15,388 views
  20. Faster Than Light and Time Travel 1 2 3 4 5

    • 112 replies
    • 6,735 views
  21. Supernovae are not our creators 1 2 3 4 5

    • 112 replies
    • 10,152 views
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