Astronomy and Cosmology

3710 topics in this forum

1. S2 orbit deviates from Keplerian ellipse 1 2 3 4

   By David Levy, April 1, 2017
   • 79 replies
   • 9.1k views
   • 
   • Janus
   • May 10, 2017

2. Is dark matter just Electromagnetism?

   By Anunnaki, May 2, 2017
   • 9 replies
   • 1.5k views
   • 
   • swansont
   • May 9, 2017

3. What happens to the energy emitted by the Sun?

   By ravell, April 30, 2017
   • 3 replies
   • 1.1k views
   • 
   • EdEarl
   • April 30, 2017

4. How to find exoplanets from home

   By alfa015, April 22, 2017
   • 3 replies
   • 1.3k views
   • 
   • swansont
   • April 29, 2017

5. Introduce microbes on Mars?

   By Silvestru, April 27, 2017
   • 5 replies
   • 1.4k views
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   • Airbrush
   • April 29, 2017

6. Energy on the Moon 1 2

   By harlock, April 2, 2017
   • 48 replies
   • 6.5k views
   • 
   • mistermack
   • April 26, 2017

7. Migrating Hot Jupiters 1 2

   By frankglennjacobs@gmail.com, April 18, 2017
   • 26 replies
   • 3.1k views
   • 
   • Mordred
   • April 25, 2017

8. Oscillating View of Infinity

   By AbnormallyHonest, March 25, 2017
   • 19 replies
   • 2.3k views
   • 
   • Mordred
   • April 23, 2017

9. How to find exoplanets from home

   By alfa015, April 20, 2017
   • 1 reply
   • 992 views
   • 
   • Phi for All
   • April 20, 2017

10. Galaxy lights distance from Earth

    By Superfastman88, March 25, 2017
    • 6 replies
    • 1.9k views
    • 
    • imatfaal
    • April 19, 2017

11. What was before the BB? 1 2

    By Alubadi21, April 13, 2017
    • 29 replies
    • 3.9k views
    • 
    • goldglow
    • April 19, 2017

12. Why suspect a holographic universe?

    By wallflash, April 10, 2017
    • 6 replies
    • 1.4k views
    • 
    • Delta1212
    • April 13, 2017

13. Conditions at an ultramassive black hole's event horizon

    By Midphase, April 11, 2017
    • 12 replies
    • 1.7k views
    • 
    • Midphase
    • April 12, 2017

14. White Holes and the Big Bang Theory

    By ItsYikez, April 6, 2017
    • 2 replies
    • 1.2k views
    • 
    • ItsYikez
    • April 10, 2017

15. What do you think about Proxima b?

    By alfa015, April 5, 2017
    • 3 replies
    • 1.4k views
    • 
    • alfa015
    • April 5, 2017

16. Early Moon's orbit - Question

    By Althistorybuff, March 23, 2017
    • 9 replies
    • 1.7k views
    • 
    • Althistorybuff
    • April 5, 2017

17. How were engineers able to shield against the Van Allen radiation belt?

    By CuriousStudent, March 27, 2017
    • 2 replies
    • 1.4k views
    • 
    • Enthalpy
    • April 2, 2017

18. Matter in accretion disks VS higgs-boson at CERN 1 2 3 4

    By David Levy, March 7, 2017
    • 85 replies
    • 7.8k views
    • 
    • Strange
    • April 1, 2017

19. Fastest Star in the Galaxy

    By Airbrush, March 30, 2017
    • 2 replies
    • 1.1k views
    • 
    • Airbrush
    • March 30, 2017

20. Is this universe completely silent?

    By Sriman Dutta, March 28, 2017
    • 15 replies
    • 2.9k views
    • 
    • Moontanman
    • March 28, 2017

21. N-Body Problem - need a simple answer for a created planetary system

    By Althistorybuff, March 22, 2017
    • 3 replies
    • 1.2k views
    • 
    • KipIngram
    • March 27, 2017

22. What am I observing? 1 2 3 4

    By JohnLesser, March 20, 2017
    • 88 replies
    • 9k views
    • 
    • JohnLesser
    • March 26, 2017

23. Question on Red Dwarf Binary Tidal Locking

    By Althistorybuff, March 19, 2017
    • 5 replies
    • 2.3k views
    • 
    • imatfaal
    • March 22, 2017

24. How did all life become developed by the big bang?

    By EmmaWhat, March 3, 2017
    • 21 replies
    • 3k views
    • 
    • StringJunky
    • March 19, 2017

25. Gravitational waves - is it possible to detect them on Earth?

    By ravell, November 20, 2016
    • 14 replies
    • 2.1k views
    • 
    • ravell
    • March 18, 2017