Astronomy and Cosmology

3705 topics in this forum

1. Gravitation and refraction.

   By Гера�им, October 21, 2014
   • 10 replies
   • 1.7k views
   • 
   • Mordred
   • October 23, 2014

2. Understanding Neutrinos and Dark Matter

   By the_singularity, October 16, 2014
   • 5 replies
   • 1.4k views
   • 
   • Bill Angel
   • October 19, 2014

3. What is the Sun's affect on Earth's orbit

   By Bluemoon, October 6, 2014
   • 5 replies
   • 1.3k views
   • 
   • Bluemoon
   • October 13, 2014

4. Lunar noon...

   By Externet, October 12, 2014
   • 2 replies
   • 3.5k views
   • 
   • Externet
   • October 12, 2014

5. Lunar azimuth

   By Externet, October 12, 2014
   • 1 reply
   • 1.5k views
   • 
   • studiot
   • October 12, 2014

6. Naked-Eye Visibility in Space

   By GeeKay, September 25, 2014
   • 3 replies
   • 1.3k views
   • 
   • Archimedes
   • October 11, 2014

7. Van Allen belts (split from sources of e-e+ field in QFT)

   By sunshaker, October 6, 2014
   • 3 replies
   • 1.1k views
   • 
   • sunshaker
   • October 10, 2014

8. Dark matter and doppler

   By Le Repteux, October 1, 2014
   • 19 replies
   • 1.9k views
   • 
   • Strange
   • October 6, 2014

9. Gaia Parallax Measurement?

   By Dart15, October 3, 2014
   • 2 replies
   • 1.3k views
   • 
   • mathematic
   • October 4, 2014

10. Did a Meteorite Hit the Capital of Nicaragua?

    By spacevudo, September 15, 2014
    • 6 replies
    • 1.4k views
    • 
    • GeeKay
    • September 26, 2014

11. SETI@Home

    By Nicholas Kang, July 7, 2014
    • 19 replies
    • 2.2k views
    • 
    • GeeKay
    • September 25, 2014

12. Interesting cosmic structures and planets

    By Buych778, September 18, 2014
    • 2 replies
    • 1.1k views
    • 
    • Buych778
    • September 22, 2014

13. Why the belief that black holes collapse to a singularity?

    By CCWilson, September 18, 2014
    • 10 replies
    • 1.8k views
    • 
    • elfmotat
    • September 22, 2014

14. Question about atmospheric optics

    By DylsexicChciken, September 16, 2014
    • 0 replies
    • 899 views
    • 
    • DylsexicChciken
    • September 16, 2014

15. Planck length and the expansion of space.

    By Sorcerer, August 31, 2014
    • 4 replies
    • 1.4k views
    • 
    • Delta1212
    • September 16, 2014

16. Europa May Have Plate Tectonics

    By tentacle, September 9, 2014
    • 8 replies
    • 1.6k views
    • 
    • Ophiolite
    • September 12, 2014

17. Solar Quest-Understanding Flares, Prominences and Sunspots

    By Nicholas Kang, August 18, 2014
    • 9 replies
    • 1.7k views
    • 
    • Nicholas Kang
    • September 10, 2014

18. Rosetta-Why 10 Years?

    By Nicholas Kang, August 13, 2014
    • 14 replies
    • 2.2k views
    • 
    • Nicholas Kang
    • September 10, 2014

19. Newfound Asteroid will Come 10x Closer to Our Planet Than the Moon On Sunday

    By spacevudo, September 6, 2014
    • 0 replies
    • 1.2k views
    • 
    • spacevudo
    • September 6, 2014

20. Is Dark matter Necessary? 1 2

    By LS George, August 8, 2014
    • 30 replies
    • 4.5k views
    • 
    • Strange
    • September 5, 2014

21. telescope question

    By hoola, August 29, 2014
    • 8 replies
    • 1.3k views
    • 
    • imatfaal
    • September 5, 2014

22. Which way is South on WMAP ?

    By Bjarne, August 31, 2014
    • 5 replies
    • 1.1k views
    • 
    • Strange
    • September 2, 2014

23. 3 issues

    By Jurek, September 1, 2014
    • 3 replies
    • 1.1k views
    • 
    • swansont
    • September 1, 2014

24. Help me with telescope

    By tentacle, August 23, 2014
    • 8 replies
    • 1.7k views
    • 
    • tentacle
    • August 30, 2014

25. Fossils in meteroite?

    By tentacle, August 29, 2014
    • 5 replies
    • 1.4k views
    • 
    • tentacle
    • August 29, 2014