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Astronomy and Cosmology

Topics related to observation of space and any related phenomena.

3714 topics in this forum

  1. The Sunday Promenade on Titan

    By Gian,
    • 0 replies
    • 338 views

  2. Dark Energy

    By Agent Smith,
    • 17 replies
    • 1.2k views

  3. Can we create Micro Climate Craters on Mars by deflecting Comets? Need Peer Review

    By PhotonBytes,
    • 0 replies
    • 367 views

  4. Nature loves spirals

    By studiot,
    • 6 replies
    • 591 views

  5. What is the depth of the gravitational potential of the universe?

    By Halc,
    • 9 replies
    • 1.6k views

  6. How does the light from distant stars get to our eyes?

    By gib65,
    • 24 replies
    • 2.7k views

  7. Why is a fine-tuned universe a problem? 1 2 3 4

    By 34student,
    • 83 replies
    • 10.6k views

  8. Was the universe "dark" before the eyesight

    By vitttorrio,
    • 10 replies
    • 1.1k views

  9. Musings of a mad scientist (inflation as cosmological constant)

    By Mordred,
    • 0 replies
    • 573 views

  10. Mr

    By Edenjs,
    • 10 replies
    • 807 views

  11. Dark energy with negative and positive kinetic energy and the Big Rip

    By xX_minecraftMLGPRO2019_Xx,
    • 4 replies
    • 643 views

  12. Did the bing bang actually happen? 1 2 3

    By tmdarkmatter,
    • 50 replies
    • 3.6k views

  13. Hydrogen thermal equilibrium decoupling

    By Mordred,
    • 2 replies
    • 532 views

  14. Solar fusion, neutrinos and age of solar system

    By Sensei,
    • 10 replies
    • 3k views

  15. Revisiting the Kardashev Scale of Civilizations

    By Airbrush,
    • 0 replies
    • 547 views

  16. Will universe collapse?

    By vitttorrio,
    • 4 replies
    • 802 views

  17. Admiral Lord Nelson in Space

    By Gian,
    • 9 replies
    • 1.3k views

  18. Please, tell what objects

    By RomanRodinskiy,
    • 2 replies
    • 804 views

  19. The Total Perspective Vortex, Astrology and one small piece of fairy cake

    By Gian,
    • 22 replies
    • 2.6k views

  20. astrophotography

    By sddfds,
    • 1 reply
    • 869 views

  21. State of "matter" of a singularity 1 2 3 4 7

    By gatewood,
    • 157 replies
    • 14.5k views

  22. DART Mission

    By paulsutton,
    • 3 replies
    • 889 views

  23. Universal Expansion Alternative Theory

    By Charon,
    • 2 replies
    • 869 views

  24. Frank Drake (1930 - 2022)

    By toucana,
    • 1 reply
    • 845 views

  25. Big Bang theory 1 2 3

    By amshion,
    • 68 replies
    • 8k views
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