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Astronomy and Space

Space, Human spaceflight, space probes and the exploration of our Solar System. No personal theories or speculation please.

1,481 topics in this forum

  1. What is needed to creat Proton? 1 2

    By Dandav,
    • 29 replies
    • 1.8k views

  2. Origin of asteroids

    By Moontanman,
    • 8 replies
    • 395 views

  3. Solar Eclipse 2024: Pictures from Vmedvil in the Totality Zone

    By Vmedvil,
    • 1 reply
    • 90 views

  4. Are Humans the First Technologically Advanced Species in the Universe? 1 2 3 4

    By Vmedvil,
    • 65 replies
    • 861 views

  5. An Analysis Of The Big Bang

    By ClaudeGaiven,
    • 9 replies
    • 2.6k views

  6. Let's take two objects A and B at a different distance of about 29 million light years and are moving away at the rate of expansion similar to that of universe and a ray of light emitted by A toward B and the initial date of their positioning would reach

    By billywilliams,   
    • 3 replies
    • 254 views

  7. Top 5 Time Travel Movies : All Science Fiction Lovers Should Watch

    By sunglasses25,
    • 5 replies
    • 668 views

  8. The mechanism of comet formation

    By Fermer1959,
    • 0 replies
    • 123 views

  9. What if Humans Stored Nuclear Waste On Other Planets?

    By Vmedvil,
    • 5 replies
    • 574 views

  10. Nuclear Saltwater Rocket

    By Moontanman,
    • 2 replies
    • 190 views

  11. Momentum of systems

    By DimSon,
    • 2 replies
    • 666 views

  12. Humanoid Aliens? 1 2

    By Moontanman,
    • 18 replies
    • 1.1k views

  13. A Realistic Planet with 3 Moons

    By jmhuff,   
    • 1 reply
    • 255 views

  14. Planetary Defense: Shielding Earth from Asteroids

    By PanopticPerceptions,   
    • 1 reply
    • 291 views

  15. At What Altitude Can Stars Be Seen In Daylight? 1 2

    By spartan45,
    • 22 replies
    • 11.9k views

  16. I just seen a star disappear? 1 2 3 4 5

    By geko,
    • 70 replies
    • 99.9k views

  17. Time dilation and Hawkins radiation.

    By Jomazing,   
    • 15 replies
    • 1k views

  18. Entire Galaxy Destroying Kardashev Scale 4 Weapon

    By Vmedvil,
    • 4 replies
    • 692 views

  19. Hycean Planets

    By Moontanman,
    • 2 replies
    • 470 views

  20. We are not alone. aliens are among us

    By atomsmasher,
    • 10 replies
    • 896 views

  21. The things that have been told to me

    By bitdaddy,
    • 2 replies
    • 435 views

  22. Black Hole Warheads for Defense of Earth Against Hostile UFOs/UAPs

    By Vmedvil,
    • 2 replies
    • 631 views

  23. The carbon coated coin (Eden Shorthouse)

    By Edenjs,
    • 0 replies
    • 454 views

  24. Mars and the dim sun paradox

    By Moontanman,
    • 2 replies
    • 492 views

  25. Why Neutron star isn't called Proton star

    By Dandav,
    • 4 replies
    • 856 views
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