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Astronomy and Cosmology

Topics related to observation of space and any related phenomena.

3714 topics in this forum

  1. Astronomy links 1 2 3 4 5

    By Martin,
    • 105 replies
    • 109k views

  2. Cosmological Principle 1 2 3

    By Mordred,
    • 52 replies
    • 39.4k views

  3. Cosmo Basics

    By Martin,
    • 13 replies
    • 28.9k views

  4. Using BOINC / seti@home?

    By Sayonara,
    • 10 replies
    • 22k views

  5. Dark matter,energy, Hubble Tension solved?

    By SheatsToTheWind,
    • 3 replies
    • 277 views

  6. Relativistic Jets

    By dedo,
    • 1 reply
    • 389 views

  7. Stellar engine using energy from black holes? (Nihility propulsor concept)

    By Illumina,
    • 2 replies
    • 340 views

  8. Why blue shift?

    By Snoggums,
    • 11 replies
    • 3k views

  9. What is the Jeans length of our Sun?

    By Maximum7,
    • 11 replies
    • 627 views

  10. Are the north and south poles dangerous to life?

    By Airbrush,
    • 1 reply
    • 584 views

  11. Tidal disruption event - Black holes and stars

    By paulsutton,
    • 4 replies
    • 784 views

  12. Continuous Gravitational Influence Theory

    By kawiusz,
    • 2 replies
    • 738 views

  13. Comet Tsuchinshan–ATLAS

    By swansont,
    • 4 replies
    • 418 views

  14. Galaxies are much bigger than we thought, study reveals

    By DanMP,
    • 18 replies
    • 1.9k views

  15. If Earth orbited Jupiter at Moon distance

    By StringJunky,
    • 4 replies
    • 672 views

  16. Earth Mass Increase by the Sun

    By iant,
    • 6 replies
    • 966 views
    • iant
    • iant

  17. Is time getting faster? 1 2

    By gib65,
    • 43 replies
    • 3k views

  18. James Web Telescope 1 2 3

    By John John,
    • 60 replies
    • 3.2k views

  19. FLRW metric embedding diagram

    By Mordred,
    • 1 reply
    • 759 views

  20. The Moon Earths little sister 1 2

    By John John,
    • 33 replies
    • 2.1k views

  21. If Black holes slowly evaporate over time is there a point where they stop being a black hole? 1 2 3 4 5

    By MSC,
    • 104 replies
    • 7.6k views

  22. Schwarzschild cosmology

    By DeMoss,
    • 1 reply
    • 735 views

  23. Does our moon affect Earth's core 1 2

    By Kurious12,
    • 25 replies
    • 5.3k views

  24. Astronomy and Astronomy Meta Stack Exchange missing basic scientific integrity - complaint on Physics Stack Exchange

    By q2wonderland,
    • 4 replies
    • 1k views

  25. First ever sexual harassment on astronomy stack exchange

    By Nicram,
    • 5 replies
    • 1k views
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