Astronomy and Cosmology

3708 topics in this forum

1. Universe--A Moment in Time

   By B. John Jones, June 23, 2016
   • 5 replies
   • 1.2k views
   • 
   • swansont
   • June 23, 2016

2. Mars Civil Calendar Poser

   By GeeKay, June 18, 2016
   • 4 replies
   • 1.2k views
   • 
   • swansont
   • June 22, 2016

3. Screenshots from Orbiter Space Flight Simulator

   By Nicholas Kang, May 29, 2016
   • 3 replies
   • 1.7k views
   • 
   • Sensei
   • June 20, 2016

4. Approximation attempt, thoughts?

   By Endy0816, June 8, 2016
   • 11 replies
   • 1.6k views
   • 
   • Mordred
   • June 11, 2016

5. Black Holes

   By predator250, May 27, 2016
   • 17 replies
   • 1.9k views
   • 
   • Strange
   • May 29, 2016

6. Is Expansionism and Dark Energy/Matter etc all wrong about the universe?

   By Prophet12A, May 19, 2016
   • 6 replies
   • 1.4k views
   • 
   • swansont
   • May 19, 2016

7. Is our universe a 4D object? 1 2

   By Yeezi, April 9, 2016
   • 39 replies
   • 4.5k views
   • 
   • Mordred
   • May 19, 2016

8. Dark Energy Wrong?

   By BiotechFusion, April 27, 2016
   • 24 replies
   • 2.9k views
   • 
   • Mordred
   • May 19, 2016

9. Blocking microwave emissions from earth to outer space and vice versa

   By kos, April 10, 2016
   • 19 replies
   • 2.6k views
   • 
   • Enthalpy
   • May 18, 2016

10. Cobalt Planetary Core?

    By Hypok, May 9, 2016
    • 4 replies
    • 1.1k views
    • 
    • Hypok
    • May 12, 2016

11. why does the daylight Moon appear to have a 'horizonal' shadow?

    By balladofserenity, May 8, 2016
    • 2 replies
    • 1.6k views
    • 
    • Delta1212
    • May 8, 2016

12. An ultra materialistic view of the universe evolution.

    By Ruslan_Sharipov, May 8, 2016
    • 0 replies
    • 855 views
    • 
    • Ruslan_Sharipov
    • May 8, 2016

13. How did we miss a planet?

    By GrandMasterK, March 22, 2016
    • 18 replies
    • 2.5k views
    • 
    • Velocity_Boy
    • April 29, 2016

14. Galactic motion (hijack from where does space end) 1 2

    By David Levy, April 24, 2016
    • 25 replies
    • 4.6k views
    • 
    • swansont
    • April 29, 2016

15. Fire and Ice

    By 36grit, April 21, 2016
    • 4 replies
    • 1.2k views
    • 
    • Strange
    • April 28, 2016

16. Event Horizon

    By Pugdaddy, April 26, 2016
    • 1 reply
    • 1.1k views
    • 
    • elfmotat
    • April 26, 2016

17. Finally can we read headline of newspaper from space by telescope ?

    By kos, April 13, 2016
    • 12 replies
    • 7.6k views
    • 
    • Enthalpy
    • April 26, 2016

18. Milky way galaxy in a furnace.

    By David Levy, April 22, 2016
    • 19 replies
    • 2.1k views
    • 
    • Strange
    • April 23, 2016

19. Interstellar Probes

    By Airbrush, March 23, 2016
    • 13 replies
    • 1.6k views
    • 
    • Enthalpy
    • April 22, 2016

20. Astronomers Have Discovered a Super-Fast Star System That Seems to Break Current Physics Models

    By nec209, April 17, 2016
    • 2 replies
    • 1.1k views
    • 
    • Delta1212
    • April 17, 2016

21. Taking the belief out of science fact

    By dad, April 15, 2016
    • 3 replies
    • 1.1k views
    • 
    • hypervalent_iodine
    • April 15, 2016

22. Matter/Energy and Space/Time

    By Airbrush, April 13, 2016
    • 1 reply
    • 994 views
    • 
    • Strange
    • April 13, 2016

23. what is time? 1 2 3

    By dad, April 11, 2016
    • 64 replies
    • 6.4k views
    • 
    • swansont
    • April 12, 2016

24. Dark Energy

    By surreptitious57, April 12, 2016
    • 1 reply
    • 974 views
    • 
    • Mordred
    • April 12, 2016

25. Does time exist in the far universe? 1 2

    By dad, April 11, 2016
    • 37 replies
    • 3.3k views
    • 
    • swansont
    • April 11, 2016