Physics, Space Science and Theories

1,482 topics in this forum

1. Richard Feynman: A Comprehensive list of Books & Videos 1 2

   By Feynman, January 12, 2013
   • 31 replies
   • 14,389 views
   • 
   • rockettsue
   • November 16, 2018

2. What causes the tides?

   By JamesF, 16 hours ago
   • 15 replies
   • 179 views
   • 
   • Marvin Jenkins
   • 11 hours ago

3. Question regarding red giants

   By Regiomontanud, Tuesday at 20:29
   • 7 replies
   • 100 views
   • 
   • Gfamily
   • 15 hours ago

4. Many worlds busted? 1 2

   By vlaiv, September 30
   • 39 replies
   • 441 views
   • 
   • vlaiv
   • October 1

5. Parallax, the limit.

   By Marvin Jenkins, September 30
   • 6 replies
   • 161 views
   • 
   • robin_astro
   • October 2

6. Nature of Gravity Itself

   By Sunshine, September 27
   • 8 replies
   • 189 views
   • 
   • carastro
   • October 14

7. Mathematical Possibility

   By Sunshine, September 27
   • 6 replies
   • 164 views
   • 
   • andrew s
   • October 13

8. LSST - The Large Synoptic Survey Telescope

   By Synchronicity, September 25
   • 1 reply
   • 78 views
   • 
   • robin_astro
   • September 27

9. Halton Arp picture problem 1 2

   By Marvin Jenkins, September 23
   • 35 replies
   • 506 views
   • 
   • Marvin Jenkins
   • October 12

10. Rate of shrinkage of the Martian Poles?

    By Drifter, September 23
    • 10 replies
    • 255 views
    • 
    • Drifter
    • October 12

11. The Bare Minimum Number of Martian Settlers? 110!

    By Macavity, September 22
    • 0 replies
    • 86 views
    • 
    • Macavity
    • September 22

12. Panspermia 1 2

    By Robindonne, September 20
    • 36 replies
    • 604 views
    • 
    • robin_astro
    • October 15

13. Density of light from stars

    By Viktiste, September 15
    • 14 replies
    • 298 views
    • 
    • Viktiste
    • October 8

14. 5th Gas Giant in the Solar System's distant past?

    By Persony Person, September 15
    • 2 replies
    • 129 views
    • 
    • Persony Person
    • September 16

15. Possible life on Venus finally announced

    By TerryMcK, September 14
    • 23 replies
    • 468 views
    • 
    • Ouroboros
    • 18 hours ago

16. Time to Fall in a Plunge Orbit

    By David Sims, September 14
    • 0 replies
    • 81 views
    • 
    • David Sims
    • September 14

17. A Determination of a Preliminary Orbit from Four Observations

    By David Sims, September 14
    • 0 replies
    • 74 views
    • 
    • David Sims
    • September 14

18. Dark matter is more lumpy than expected

    By Ags, September 10
    • 0 replies
    • 134 views
    • 
    • Ags
    • September 10

19. Do not clean this blackboard -- Feynman anecdote

    By Macavity, September 3
    • 4 replies
    • 319 views
    • 
    • martin_h
    • September 7

20. Is Interstellar Travel Possible? 1 2

    By alberto91, August 21
    • 40 replies
    • 771 views
    • 
    • Rusted
    • August 25

21. Dark adaptation - more than meets the eye?

    By jambouk, August 18
    • 14 replies
    • 304 views
    • 
    • markse68
    • August 23

22. Elliptical Transfer-Intercept Orbits: Non-Hohmann Transfer Orbits that Take You Somewhere

    By David Sims, August 17
    • 0 replies
    • 159 views
    • 
    • David Sims
    • August 17

23. Looking for a book on Stellar Evolution

    By Starwatcher2001, August 13
    • 13 replies
    • 360 views
    • 
    • Synchronicity
    • August 26

24. Scientists deserve to be Entertained too! :P

    By Macavity, August 8
    • 0 replies
    • 177 views
    • 
    • Macavity
    • August 8

25. Interview about new proposed interstellar spacecraft

    By alberto91, August 7
    • 0 replies
    • 127 views
    • 
    • alberto91
    • August 7